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Colour

#312A56

  • #312A56
  • Blue
  • Dark
  • Nearest: Dark slateblue

#312A56 is a blue with RGB values 49, 42, 86 and HSL 250°, 34%, 25%. It is a dark colour, so white text on it reaches 13.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#312A56#312A56
HEX#312A56
RGBrgb(49, 42, 86)
RGB (0–1)0.1922, 0.1647, 0.3373
RGB percentages19.2%, 16.5%, 33.7%
HSLhsl(249.5, 34.4%, 25.1%)
HSV / HSBhsv(249.5, 51.2%, 33.7%)
CMYK43%, 51.2%, 0%, 66.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,222,102
CSS custom property--colour: #312A56;

Brightness & contrast

Relative luminance0.02981WCAG 2.x, 0 is black and 1 is white
Perceived brightness51 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.16:1
Contrast with white13.16:1WCAG normal text: AAA
Contrast with black1.6:1WCAG normal text: Fail
Greyscale equivalent#2F2F2F
Inverted#CED5A9

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#193158no red cones; affects about 1% of men; ΔE 10.3 from the original
Deuteranopia#192F55no green cones; the most common form, about 1% of men; ΔE 10.1 from the original
Tritanopia#27333Bno blue cones; rare, and affects men and women equally; ΔE 26.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.16:1WCAG large text: AAA
Contrast with black, large text1.6:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 22.3Midnight blue · ΔE 29.1Black · ΔE 36.1Dark slate grey · ΔE 36.8Rebecca purple · ΔE 37.1Steel blue · ΔE 38.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 22.3, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4F562A
Analogous#2A3956, #472A56
Triadic#56312A, #2A5631
Split complementary#56472A, #39562A
Tetradic#562A39, #4F562A, #2A5647

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9187C5
Lighter +30%#7265B4
Lighter +20%#584B9B
Lighter +10%#453B78
Darker −10%#1D1934
Darker −20%#0A0911
Darker −30%#000000
Darker −40%#000000
More saturated +25%#261A66
Less saturated −25%#3C3A46

Channel breakdown

R49
G42
B86
Red49 (19.2%)
Green42 (16.5%)
Blue86 (33.7%)
Hue249.55°
Saturation (HSL)34.38%
Lightness25.1%
Dominant channelBlue
Hex per channelR 31 · G 2A · B 56

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Every value on this page was computed from “312a56” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.