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Colour

#00375B

  • #00375B
  • Blue
  • Dark
  • Nearest: Dark slate grey

#00375B is a blue with RGB values 0, 55, 91 and HSL 204°, 100%, 18%. It is a dark colour, so white text on it reaches 12.4:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#00375B#00375B
HEX#00375B
RGBrgb(0, 55, 91)
RGB (0–1)0, 0.2157, 0.3569
RGB percentages0%, 21.6%, 35.7%
HSLhsl(203.7, 100%, 17.8%)
HSV / HSBhsv(203.7, 100%, 35.7%)
CMYK100%, 39.6%, 0%, 64.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer14,171
CSS custom property--colour: #00375B;

Brightness & contrast

Relative luminance0.03488WCAG 2.x, 0 is black and 1 is white
Perceived brightness52.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.37:1
Contrast with white12.37:1WCAG normal text: AAA
Contrast with black1.7:1WCAG normal text: Fail
Greyscale equivalent#2E2E2E
Inverted#FFC8A4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#25395Cno red cones; affects about 1% of men; ΔE 6 from the original
Deuteranopia#18315Ano green cones; the most common form, about 1% of men; ΔE 7.2 from the original
Tritanopia#004044no blue cones; rare, and affects men and women equally; ΔE 24.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.37:1WCAG large text: AAA
Contrast with black, large text1.7:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 26.5Steel blue · ΔE 31.3Dark slateblue · ΔE 32.7Black · ΔE 34.1Dim grey · ΔE 34.5Slate grey · ΔE 34.6
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 26.49, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5B2400
Analogous#005B51, #000A5B
Triadic#5B0037, #375B00
Split complementary#5B000A, #5B5100
Tetradic#51005B, #5B2400, #0A5B00

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#28AAFF
Lighter +30%#0093F4
Lighter +20%#0075C1
Lighter +10%#00568E
Darker −10%#001828
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00375B
Less saturated −25%#0B3550

Channel breakdown

R0
G55
B91
Red0 (0%)
Green55 (21.6%)
Blue91 (35.7%)
Hue203.74°
Saturation (HSL)100%
Lightness17.84%
Dominant channelBlue
Hex per channelR 00 · G 37 · B 5B

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Every value on this page was computed from “00375b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.