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Recognised as Colour

#0381CB

  • #0381CB
  • Blue
  • Dark
  • Nearest: Steel blue

#0381CB is a blue with RGB values 3, 129, 203 and HSL 202°, 97%, 40%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#0381CB#0381CB
HEX#0381CB
RGBrgb(3, 129, 203)
RGB (0–1)0.0118, 0.5059, 0.7961
RGB percentages1.2%, 50.6%, 79.6%
HSLhsl(202.2, 97.1%, 40.4%)
HSV / HSBhsv(202.2, 98.5%, 79.6%)
CMYK98.5%, 36.5%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer229,835
CSS custom property--colour: #0381CB;

Brightness & contrast

Relative luminance0.20032WCAG 2.x, 0 is black and 1 is white
Perceived brightness120.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.01:1
Contrast with white4.19:1WCAG normal text: Fail
Contrast with black5.01:1WCAG normal text: AA
Greyscale equivalent#6C6C6C
Inverted#FC7E34

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5D84CEno red cones; affects about 1% of men; ΔE 11.3 from the original
Deuteranopia#4174CAno green cones; the most common form, about 1% of men; ΔE 13.7 from the original
Tritanopia#00939Cno blue cones; rare, and affects men and women equally; ΔE 42.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.19:1WCAG large text: AA
Contrast with black, large text5.01:1WCAG large text: AAA

Named colours

Steel blue · ΔE 14.4Cornflower blue · ΔE 15.4Dodgerblue · ΔE 22.1Deep skyblue · ΔE 26.3Royal blue · ΔE 34.2Light skyblue · ΔE 34.3
Nearest named CSS colourSteel blue (#4682B4)ΔE 14.36, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CB4D03
Analogous#03CBB1, #031DCB
Triadic#CB0381, #81CB03
Split complementary#CB031D, #CBB103
Tetradic#B103CB, #CB4D03, #1DCB03

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9CDAFE
Lighter +30%#6AC7FD
Lighter +20%#38B3FC
Lighter +10%#06A0FB
Darker −10%#026199
Darker −20%#024166
Darker −30%#012134
Darker −40%#000102
More saturated +25%#0082CE
Less saturated −25%#1D7AB1

Channel breakdown

R3
G129
B203
Red3 (1.2%)
Green129 (50.6%)
Blue203 (79.6%)
Hue202.2°
Saturation (HSL)97.09%
Lightness40.39%
Dominant channelBlue
Hex per channelR 03 · G 81 · B CB

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Every value on this page was computed from “0381cb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.