Nerdulator> put something in

Recognised as Colour

#252F40

  • #252F40
  • Blue
  • Dark
  • Nearest: Dark slate grey

#252F40 is a blue with RGB values 37, 47, 64 and HSL 218°, 27%, 20%. It is a dark colour, so white text on it reaches 13.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#252F40#252F40
HEX#252F40
RGBrgb(37, 47, 64)
RGB (0–1)0.1451, 0.1843, 0.251
RGB percentages14.5%, 18.4%, 25.1%
HSLhsl(217.8, 26.7%, 19.8%)
HSV / HSBhsv(217.8, 42.2%, 25.1%)
CMYK42.2%, 26.6%, 0%, 74.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,436,928
CSS custom property--colour: #252F40;

Brightness & contrast

Relative luminance0.02797WCAG 2.x, 0 is black and 1 is white
Perceived brightness46.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.47:1
Contrast with white13.47:1WCAG normal text: AAA
Contrast with black1.56:1WCAG normal text: Fail
Greyscale equivalent#2E2E2E
Inverted#DAD0BF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#293041no red cones; affects about 1% of men; ΔE 1.3 from the original
Deuteranopia#262D40no green cones; the most common form, about 1% of men; ΔE 2 from the original
Tritanopia#1C3335no blue cones; rare, and affects men and women equally; ΔE 12.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.47:1WCAG large text: AAA
Contrast with black, large text1.56:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 19.3Black · ΔE 22.7Dim grey · ΔE 28Slate grey · ΔE 33.8Gray · ΔE 36.4Light slate grey · ΔE 36.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 19.33, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#403625
Analogous#253C40, #292540
Triadic#40252F, #2F4025
Split complementary#402925, #3D4025
Tetradic#40253C, #403625, #254029

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7D91B4
Lighter +30%#5D76A1
Lighter +20%#4A5E81
Lighter +10%#384760
Darker −10%#121720
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#182C4D
Less saturated −25%#323233

Channel breakdown

R37
G47
B64
Red37 (14.5%)
Green47 (18.4%)
Blue64 (25.1%)
Hue217.78°
Saturation (HSL)26.73%
Lightness19.8%
Dominant channelBlue
Hex per channelR 25 · G 2F · B 40

Keep nerding

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

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “252f40” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.