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Recognised as Colour

#011231

  • #011231
  • Blue
  • Dark
  • Nearest: Black

#011231 is a blue with RGB values 1, 18, 49 and HSL 219°, 96%, 10%. It is a dark colour, so white text on it reaches 18.5:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#011231#011231
HEX#011231
RGBrgb(1, 18, 49)
RGB (0–1)0.0039, 0.0706, 0.1922
RGB percentages0.4%, 7.1%, 19.2%
HSLhsl(218.8, 96%, 9.8%)
HSV / HSBhsv(218.8, 98%, 19.2%)
CMYK98%, 63.3%, 0%, 80.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer70,193
CSS custom property--colour: #011231;

Brightness & contrast

Relative luminance0.00661WCAG 2.x, 0 is black and 1 is white
Perceived brightness21.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.55:1
Contrast with white18.55:1WCAG normal text: AAA
Contrast with black1.13:1WCAG normal text: Fail
Greyscale equivalent#111111
Inverted#FEEDCE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001632no red cones; affects about 1% of men; ΔE 3 from the original
Deuteranopia#001130no green cones; the most common form, about 1% of men; ΔE 0.5 from the original
Tritanopia#001A1Fno blue cones; rare, and affects men and women equally; ΔE 21.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.55:1WCAG large text: AAA
Contrast with black, large text1.13:1WCAG large text: Fail

Named colours

Black · ΔE 24.1Dark slate grey · ΔE 36.3Dark slateblue · ΔE 37.3Midnight blue · ΔE 38.4Dim grey · ΔE 45Steel blue · ΔE 48.6
Nearest named CSS colourBlack (#000000)ΔE 24.1, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#312001
Analogous#012A31, #080131
Triadic#310112, #123101
Split complementary#310801, #2A3101
Tetradic#31012A, #312001, #013108

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#055BF9
Lighter +30%#0449C7
Lighter +20%#033795
Lighter +10%#022463
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001232
Less saturated −25%#07142B

Channel breakdown

R1
G18
B49
Red1 (0.4%)
Green18 (7.1%)
Blue49 (19.2%)
Hue218.75°
Saturation (HSL)96%
Lightness9.8%
Dominant channelBlue
Hex per channelR 01 · G 12 · B 31

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Every value on this page was computed from “hex 011231” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.