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Recognised as Colour

#04454B

  • #04454B
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#04454B is a cyan with RGB values 4, 69, 75 and HSL 185°, 90%, 15%. It is a dark colour, so white text on it reaches 10.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#04454B#04454B
HEX#04454B
RGBrgb(4, 69, 75)
RGB (0–1)0.0157, 0.2706, 0.2941
RGB percentages1.6%, 27.1%, 29.4%
HSLhsl(185.1, 89.9%, 15.5%)
HSV / HSBhsv(185.1, 94.7%, 29.4%)
CMYK94.7%, 8%, 0%, 70.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer279,883
CSS custom property--colour: #04454B;

Brightness & contrast

Relative luminance0.0479WCAG 2.x, 0 is black and 1 is white
Perceived brightness58.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.73:1
Contrast with white10.73:1WCAG normal text: AAA
Contrast with black1.96:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#FBBAB4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3E424Bno red cones; affects about 1% of men; ΔE 17 from the original
Deuteranopia#353B4Bno green cones; the most common form, about 1% of men; ΔE 17.9 from the original
Tritanopia#004847no blue cones; rare, and affects men and women equally; ΔE 5.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.73:1WCAG large text: AAA
Contrast with black, large text1.96:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 8.5Teal · ΔE 25.6Dim grey · ΔE 25.9Dark cyan · ΔE 29.9Slate grey · ΔE 30.2Black · ΔE 32
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 8.53, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4B0A04
Analogous#044B2D, #04224B
Triadic#4B0445, #454B04
Split complementary#4B0422, #4B2E04
Tetradic#2D044B, #4B0A04, #224B04

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#27E2F4
Lighter +30%#0CCBDC
Lighter +20%#099EAC
Lighter +10%#07727B
Darker −10%#01181B
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00484F
Less saturated −25%#0E3D41

Channel breakdown

R4
G69
B75
Red4 (1.6%)
Green69 (27.1%)
Blue75 (29.4%)
Hue185.07°
Saturation (HSL)89.87%
Lightness15.49%
Dominant channelBlue
Hex per channelR 04 · G 45 · B 4B

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Every value on this page was computed from “04454b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.