#0B1237#0B1237

#0B1237 is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.3% C 0.073 H 270.5°. Best body text is #FFFFFF at 18.17:1 contrast (WCAG AA passes).

Color values

HEX	#0B1237
RGB	rgb(11, 18, 55)
HSL	hsl(230, 67%, 13%)
HSV	hsv(230, 80%, 22%)
CMYK	cmyk(80%, 67.3%, 0%, 78.4%)
CIE-LAB	lab(7.04, 11.82, -25.11)
CIE-LCH	lch(7.04, 27.75, 295.21°)
OKLab	oklab(20.29% 0.0006 -0.0725)
OKLCH	oklch(20.29% 0.073 270.5)
XYZ	xyz(1.0437, 0.7795, 3.7091)
Luminance	0.0078 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 4.01

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1237 #37300B

analogous

#0B2837 #0B1237 #1A0B37

triadic

#0B1237 #370B12 #12370B

tetradic

#0B1237 #370B28 #37300B #0B371A

square

#0B1237 #370B28 #37300B #0B371A

split-complementary

#0B1237 #371A0B #28370B

monochromatic

#05081A #05081A #0B1237 #15236A #1F339D

Accessibility & contrast

On white

18.17

#0B1237 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#0B1237 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1237

18.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1237	#FFFFFF	#000000	##FFFFFF
##0B1237	1.00	18.17	1.16	18.17
#FFFFFF	18.17	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001838

Deuteranopia (green-blind)

#001436

Tritanopia (blue-blind)

#001B22

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #0b1237;
/* rgb */ color: rgb(11, 18, 55);
/* oklch */ color: oklch(20.3% 0.073 270.5);

Tailwind

colors: {
  custom: {
    50: '#514f6e',
    500: '#0b1237',
    950: '#000000',
  },
}

SCSS

$custom: #0b1237;
$custom-light: #514f6e;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1237",
  "rgb": {
    "r": 11,
    "g": 18,
    "b": 55
  },
  "hsl": {
    "h": 230.455,
    "s": 66.667,
    "l": 12.941
  },
  "oklch": {
    "l": 0.2029,
    "c": 0.07252,
    "h": 270.5
  },
  "luminance": 0.0078
}

Semantic roles & 50–950 ramp

primary

#0B1237

secondary

#74682A

accent

#CE3EEA

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #0B1237

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

Preview Lab → · Contrast checker → · Palette generator →