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Recognised as Colour

#0031FD

  • #0031FD
  • Blue
  • Dark
  • Nearest: Medium blue

#0031FD is a blue with RGB values 0, 49, 253 and HSL 228°, 100%, 50%. It is a dark colour, so white text on it reaches 7.3:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#0031FD#0031FD
HEX#0031FD
RGBrgb(0, 49, 253)
RGB (0–1)0, 0.1922, 0.9922
RGB percentages0%, 19.2%, 99.2%
HSLhsl(228.4, 100%, 49.6%)
HSV / HSBhsv(228.4, 100%, 99.2%)
CMYK100%, 80.6%, 0%, 0.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,797
CSS custom property--colour: #0031FD;

Brightness & contrast

Relative luminance0.09288WCAG 2.x, 0 is black and 1 is white
Perceived brightness93.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.35:1
Contrast with white7.35:1WCAG normal text: AAA
Contrast with black2.86:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#FFCE02

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0062FFno red cones; affects about 1% of men; ΔE 33.3 from the original
Deuteranopia#0049FAno green cones; the most common form, about 1% of men; ΔE 16.7 from the original
Tritanopia#007499no blue cones; rare, and affects men and women equally; ΔE 107 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.35:1WCAG large text: AAA
Contrast with black, large text2.86:1WCAG large text: Fail

Named colours

Medium blue · ΔE 14.3Blue · ΔE 16.9Blue violet · ΔE 26Dark violet · ΔE 31.6Dark orchid · ΔE 40.2Dark blue · ΔE 40.6
Nearest named CSS colourMedium blue (#0000CD)ΔE 14.32, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FDCC00
Analogous#00AFFD, #4E00FD
Triadic#FD0031, #31FD00
Split complementary#FD4D00, #B0FD00
Tetradic#FD00AF, #FDCC00, #00FD4D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CAD4FF
Lighter +30%#97ABFF
Lighter +20%#6482FF
Lighter +10%#3159FF
Darker −10%#0027CA
Darker −20%#001D97
Darker −30%#001364
Darker −40%#000931
More saturated +25%#0031FD
Less saturated −25%#2044DD

Channel breakdown

R0
G49
B253
Red0 (0%)
Green49 (19.2%)
Blue253 (99.2%)
Hue228.38°
Saturation (HSL)100%
Lightness49.61%
Dominant channelBlue
Hex per channelR 00 · G 31 · B FD

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Every value on this page was computed from “0031fd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.