#0B2151#0B2151

#0B2151 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.4% C 0.093 H 263.1°. Best body text is #FFFFFF at 15.55:1 contrast (WCAG AA passes).

Color values

HEX	#0B2151
RGB	rgb(11, 33, 81)
HSL	hsl(221, 76%, 18%)
HSV	hsv(221, 86%, 32%)
CMYK	cmyk(86.4%, 59.3%, 0%, 68.2%)
CIE-LAB	lab(14.13, 11.89, -31.84)
CIE-LCH	lch(14.13, 33.99, 290.47°)
OKLab	oklab(26.39% -0.0112 -0.0918)
OKLCH	oklch(26.39% 0.093 263.1)
XYZ	xyz(2.1665, 1.7527, 8.0071)
Luminance	0.0175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B2151 #513B0B

analogous

#0B4451 #0B2151 #180B51

triadic

#0B2151 #510B21 #21510B

tetradic

#0B2151 #510B44 #513B0B #0B5118

square

#0B2151 #510B44 #513B0B #0B5118

split-complementary

#0B2151 #51180B #44510B

monochromatic

#040B1B #040B1B #0B2151 #123787 #1A4DBD

Accessibility & contrast

On white

15.55

#0B2151 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#0B2151 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B2151

15.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B2151	#FFFFFF	#000000	##FFFFFF
##0B2151	1.00	15.55	1.35	15.55
#FFFFFF	15.55	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002753

Deuteranopia (green-blind)

#002150

Tritanopia (blue-blind)

#002D35

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #0b2151;
/* rgb */ color: rgb(11, 33, 81);
/* oklch */ color: oklch(26.4% 0.093 263.1);

Tailwind

colors: {
  custom: {
    50: '#575b82',
    500: '#0b2151',
    950: '#000000',
  },
}

SCSS

$custom: #0b2151;
$custom-light: #575b82;
$custom-dark: #000000;

JSON

{
  "hex": "#0b2151",
  "rgb": {
    "r": 11,
    "g": 33,
    "b": 81
  },
  "hsl": {
    "h": 221.143,
    "s": 76.087,
    "l": 18.039
  },
  "oklch": {
    "l": 0.26394,
    "c": 0.09251,
    "h": 263.1
  },
  "luminance": 0.01753
}

Semantic roles & 50–950 ramp

primary

#0B2151

secondary

#8D6E2B

accent

#B735F3

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04040A

muted

#79797C

Preview Lab

Preview with #0B2151

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →