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Recognised as Colour

#2B3FA4

  • #2B3FA4
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2B3FA4 is a blue with RGB values 43, 63, 164 and HSL 230°, 58%, 41%. It is a dark colour, so white text on it reaches 8.9:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2B3FA4#2B3FA4
HEX#2B3FA4
RGBrgb(43, 63, 164)
RGB (0–1)0.1686, 0.2471, 0.6431
RGB percentages16.9%, 24.7%, 64.3%
HSLhsl(230.1, 58.5%, 40.6%)
HSV / HSBhsv(230.1, 73.8%, 64.3%)
CMYK73.8%, 61.6%, 0%, 35.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,834,340
CSS custom property--colour: #2B3FA4;

Brightness & contrast

Relative luminance0.06749WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.94:1
Contrast with white8.94:1WCAG normal text: AAA
Contrast with black2.35:1WCAG normal text: Fail
Greyscale equivalent#424242
Inverted#D4C05B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004FA7no red cones; affects about 1% of men; ΔE 13.9 from the original
Deuteranopia#0044A2no green cones; the most common form, about 1% of men; ΔE 7.5 from the original
Tritanopia#00596Bno blue cones; rare, and affects men and women equally; ΔE 59.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.94:1WCAG large text: AAA
Contrast with black, large text2.35:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 14.9Slate blue · ΔE 16.1Midnight blue · ΔE 17.3Rebecca purple · ΔE 17.6Royal blue · ΔE 18.8Indigo · ΔE 26
Nearest named CSS colourDark slateblue (#483D8B)ΔE 14.85, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A4902B
Analogous#2B7CA4, #532BA4
Triadic#A42B3F, #3FA42B
Split complementary#A4532B, #7CA42B
Tetradic#A42B7C, #A4902B, #2BA453

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B1BAEA
Lighter +30%#8897E0
Lighter +20%#6073D5
Lighter +10%#3750CB
Darker −10%#202F7C
Darker −20%#162053
Darker −30%#0B102B
Darker −40%#010102
More saturated +25%#112EBE
Less saturated −25%#45508A

Channel breakdown

R43
G63
B164
Red43 (16.9%)
Green63 (24.7%)
Blue164 (64.3%)
Hue230.08°
Saturation (HSL)58.45%
Lightness40.59%
Dominant channelBlue
Hex per channelR 2B · G 3F · B A4

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Every value on this page was computed from “2b3fa4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.