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Recognised as Colour

#010237

  • #010237
  • Blue
  • Dark
  • Nearest: Midnight blue

#010237 is a blue with RGB values 1, 2, 55 and HSL 239°, 96%, 11%. It is a dark colour, so white text on it reaches 19.7:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#010237#010237
HEX#010237
RGBrgb(1, 2, 55)
RGB (0–1)0.0039, 0.0078, 0.2157
RGB percentages0.4%, 0.8%, 21.6%
HSLhsl(238.9, 96.4%, 11%)
HSV / HSBhsv(238.9, 98.2%, 21.6%)
CMYK98.2%, 96.4%, 0%, 78.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer66,103
CSS custom property--colour: #010237;

Brightness & contrast

Relative luminance0.00326WCAG 2.x, 0 is black and 1 is white
Perceived brightness18.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.72:1
Contrast with white19.72:1WCAG normal text: AAA
Contrast with black1.07:1WCAG normal text: Fail
Greyscale equivalent#060606
Inverted#FEFDC8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#000E38no red cones; affects about 1% of men; ΔE 6.2 from the original
Deuteranopia#000836no green cones; the most common form, about 1% of men; ΔE 4.2 from the original
Tritanopia#00121Dno blue cones; rare, and affects men and women equally; ΔE 29.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.72:1WCAG large text: AAA
Contrast with black, large text1.07:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 26.5Dark slateblue · ΔE 31.1Black · ΔE 36.1Rebecca purple · ΔE 42.5Indigo · ΔE 44.5Navy · ΔE 46
Nearest named CSS colourMidnight blue (#191970)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#373601
Analogous#011D37, #1B0137
Triadic#370102, #023701
Split complementary#371B01, #1D3701
Tetradic#37011D, #373601, #01371B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#090EFB
Lighter +30%#0407CD
Lighter +20%#03069B
Lighter +10%#020469
Darker −10%#000005
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#000138
Less saturated −25%#080930

Channel breakdown

R1
G2
B55
Red1 (0.4%)
Green2 (0.8%)
Blue55 (21.6%)
Hue238.89°
Saturation (HSL)96.43%
Lightness10.98%
Dominant channelBlue
Hex per channelR 01 · G 02 · B 37

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Every value on this page was computed from “hex 010237” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.