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Recognised as Colour

#004258

  • #004258
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#004258 is a cyan with RGB values 0, 66, 88 and HSL 195°, 100%, 17%. It is a dark colour, so white text on it reaches 10.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#004258#004258
HEX#004258
RGBrgb(0, 66, 88)
RGB (0–1)0, 0.2588, 0.3451
RGB percentages0%, 25.9%, 34.5%
HSLhsl(195, 100%, 17.3%)
HSV / HSBhsv(195, 100%, 34.5%)
CMYK100%, 25%, 0%, 65.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,984
CSS custom property--colour: #004258;

Brightness & contrast

Relative luminance0.04601WCAG 2.x, 0 is black and 1 is white
Perceived brightness58.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.94:1
Contrast with white10.94:1WCAG normal text: AAA
Contrast with black1.92:1WCAG normal text: Fail
Greyscale equivalent#363636
Inverted#FFBDA7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#364159no red cones; affects about 1% of men; ΔE 12.3 from the original
Deuteranopia#2B3958no green cones; the most common form, about 1% of men; ΔE 13.8 from the original
Tritanopia#004849no blue cones; rare, and affects men and women equally; ΔE 15.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.94:1WCAG large text: AAA
Contrast with black, large text1.92:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 15.8Dim grey · ΔE 28Slate grey · ΔE 29.3Steel blue · ΔE 30.8Teal · ΔE 31.4Light slate grey · ΔE 32
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 15.83, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#581600
Analogous#005842, #001658
Triadic#580042, #425800
Split complementary#580016, #584200
Tetradic#420058, #581600, #165800

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#25C9FF
Lighter +30%#00B5F1
Lighter +20%#008EBE
Lighter +10%#00688B
Darker −10%#001C25
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#004258
Less saturated −25%#0B3D4D

Channel breakdown

R0
G66
B88
Red0 (0%)
Green66 (25.9%)
Blue88 (34.5%)
Hue195°
Saturation (HSL)100%
Lightness17.25%
Dominant channelBlue
Hex per channelR 00 · G 42 · B 58

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Every value on this page was computed from “hex 004258” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.