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Colour

#0B2451

  • #0B2451
  • Blue
  • Dark
  • Nearest: Dark slateblue

#0B2451 is a blue with RGB values 11, 36, 81 and HSL 219°, 76%, 18%. It is a dark colour, so white text on it reaches 15.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#0B2451#0B2451
HEX#0B2451
RGBrgb(11, 36, 81)
RGB (0–1)0.0431, 0.1412, 0.3176
RGB percentages4.3%, 14.1%, 31.8%
HSLhsl(218.6, 76.1%, 18%)
HSV / HSBhsv(218.6, 86.4%, 31.8%)
CMYK86.4%, 55.6%, 0%, 68.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer730,193
CSS custom property--colour: #0B2451;

Brightness & contrast

Relative luminance0.01927WCAG 2.x, 0 is black and 1 is white
Perceived brightness39.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.16:1
Contrast with white15.16:1WCAG normal text: AAA
Contrast with black1.39:1WCAG normal text: Fail
Greyscale equivalent#222222
Inverted#F4DBAE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#072953no red cones; affects about 1% of men; ΔE 4 from the original
Deuteranopia#002350no green cones; the most common form, about 1% of men; ΔE 1.5 from the original
Tritanopia#002F36no blue cones; rare, and affects men and women equally; ΔE 30.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.16:1WCAG large text: AAA
Contrast with black, large text1.39:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 25.6Midnight blue · ΔE 29.4Black · ΔE 35.2Dark slate grey · ΔE 37.7Steel blue · ΔE 39.8Rebecca purple · ΔE 41.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 25.64, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#51380B
Analogous#0B4751, #150B51
Triadic#510B24, #24510B
Split complementary#51150B, #47510B
Tetradic#510B47, #51380B, #0B5115

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#437DE5
Lighter +30%#1D60D8
Lighter +20%#174CAB
Lighter +10%#11387E
Darker −10%#051024
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00215C
Less saturated −25%#172746

Channel breakdown

R11
G36
B81
Red11 (4.3%)
Green36 (14.1%)
Blue81 (31.8%)
Hue218.57°
Saturation (HSL)76.09%
Lightness18.04%
Dominant channelBlue
Hex per channelR 0B · G 24 · B 51

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Every value on this page was computed from “0b2451” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.