Nerdulator> put something in

Colour

#151B4B

  • #151B4B
  • Blue
  • Dark
  • Nearest: Dark slateblue

#151B4B is a blue with RGB values 21, 27, 75 and HSL 233°, 56%, 19%. It is a dark colour, so white text on it reaches 16.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#151B4B#151B4B
HEX#151B4B
RGBrgb(21, 27, 75)
RGB (0–1)0.0824, 0.1059, 0.2941
RGB percentages8.2%, 10.6%, 29.4%
HSLhsl(233.3, 56.3%, 18.8%)
HSV / HSBhsv(233.3, 72%, 29.4%)
CMYK72%, 64%, 0%, 70.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,383,243
CSS custom property--colour: #151B4B;

Brightness & contrast

Relative luminance0.01451WCAG 2.x, 0 is black and 1 is white
Perceived brightness34.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.28:1
Contrast with white16.28:1WCAG normal text: AAA
Contrast with black1.29:1WCAG normal text: Fail
Greyscale equivalent#1D1D1D
Inverted#EAE4B4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00234Dno red cones; affects about 1% of men; ΔE 8.6 from the original
Deuteranopia#001E4Ano green cones; the most common form, about 1% of men; ΔE 5.8 from the original
Tritanopia#002730no blue cones; rare, and affects men and women equally; ΔE 32.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.28:1WCAG large text: AAA
Contrast with black, large text1.29:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 24.2Midnight blue · ΔE 25.2Black · ΔE 36.5Rebecca purple · ΔE 38.1Dark slate grey · ΔE 42.7Indigo · ΔE 43.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 24.22, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4B4515
Analogous#15364B, #2A154B
Triadic#4B151B, #1B4B15
Split complementary#4B2A15, #364B15
Tetradic#4B1536, #4B4515, #154B2A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5B68D1
Lighter +30%#3646C3
Lighter +20%#2B389B
Lighter +10%#202973
Darker −10%#0A0D23
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#091257
Less saturated −25%#21243F

Channel breakdown

R21
G27
B75
Red21 (8.2%)
Green27 (10.6%)
Blue75 (29.4%)
Hue233.33°
Saturation (HSL)56.25%
Lightness18.82%
Dominant channelBlue
Hex per channelR 15 · G 1B · B 4B

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “151b4b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.