Colour

#253D40

#253D40
Cyan
Dark
Nearest: Dark slate grey

#253D40 is a cyan with RGB values 37, 61, 64 and HSL 187°, 27%, 20%. It is a dark colour, so white text on it reaches 11.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#253D40#253D40

HEX#253D40

RGBrgb(37, 61, 64)

RGB (0–1)0.1451, 0.2392, 0.251

RGB percentages14.5%, 23.9%, 25.1%

HSLhsl(186.7, 26.7%, 19.8%)

HSV / HSBhsv(186.7, 42.2%, 25.1%)

CMYK42.2%, 4.7%, 0%, 74.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,440,512

CSS custom property--colour: #253D40;

Brightness & contrast

Relative luminance0.04101WCAG 2.x, 0 is black and 1 is white

Perceived brightness55.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 11.54:1

Contrast with white11.54:1WCAG normal text: AAA

Contrast with black1.82:1WCAG normal text: Fail

Greyscale equivalent#383838

Inverted#DAC2BF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#393B40no red cones; affects about 1% of men; ΔE 8.9 from the original

Deuteranopia#353840no green cones; the most common form, about 1% of men; ΔE 9.1 from the original

Tritanopia#1A3F3Eno blue cones; rare, and affects men and women equally; ΔE 5.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text11.54:1WCAG large text: AAA

Contrast with black, large text1.82:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 8.1 Dim grey · ΔE 22.6 Black · ΔE 25.9 Slate grey · ΔE 30.1 Gray · ΔE 31.1 Teal · ΔE 31.9

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 8.06, clearly different but related

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#402825

Analogous#254035, #253040

Triadic#40253D, #3D4025

Split complementary#402530, #403525

Tetradic#352540, #402825, #304025

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#7DAEB4

Lighter +30%#5D99A1

Lighter +20%#4A7B81

Lighter +10%#385C60

Darker −10%#121E20

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#18474D

Less saturated −25%#323333

Channel breakdown

R37

G61

B64

Red37 (14.5%)

Green61 (23.9%)

Blue64 (25.1%)

Hue186.67°

Saturation (HSL)26.73%

Lightness19.8%

Dominant channelBlue

Hex per channelR 25 · G 3D · B 40

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#253D40

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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