#183787#183787

#183787 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.8% C 0.139 H 264.4°. Best body text is #FFFFFF at 10.85:1 contrast (WCAG AA passes).

Color values

HEX	#183787
RGB	rgb(24, 55, 135)
HSL	hsl(223, 70%, 31%)
HSV	hsv(223, 82%, 53%)
CMYK	cmyk(82.2%, 59.3%, 0%, 47.1%)
CIE-LAB	lab(25.79, 20.22, -47.91)
CIE-LCH	lch(25.79, 52.01, 292.88°)
OKLab	oklab(36.76% -0.0135 -0.1384)
OKLCH	oklch(36.76% 0.139 264.4)
XYZ	xyz(6.1145, 4.6751, 23.4971)
Luminance	0.0468 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183787 #876818

analogous

#186E87 #183787 #301887

triadic

#183787 #871837 #378718

tetradic

#183787 #87186E #876818 #188730

square

#183787 #87186E #876818 #188730

split-complementary

#183787 #873018 #6E8718

monochromatic

#060D1F #0F2253 #183787 #214CBB #3D69DC

Accessibility & contrast

On white

10.85

#183787 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#183787 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183787

10.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183787	#FFFFFF	#000000	##FFFFFF
##183787	1.00	10.85	1.94	10.85
#FFFFFF	10.85	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428A

Deuteranopia (green-blind)

#003885

Tritanopia (blue-blind)

#004B59

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #183787;
/* rgb */ color: rgb(24, 55, 135);
/* oklch */ color: oklch(36.8% 0.139 264.4);

Tailwind

colors: {
  custom: {
    50: '#696dab',
    500: '#183787',
    950: '#000000',
  },
}

SCSS

$custom: #183787;
$custom-light: #696dab;
$custom-dark: #000000;

JSON

{
  "hex": "#183787",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 135
  },
  "hsl": {
    "h": 223.243,
    "s": 69.811,
    "l": 31.176
  },
  "oklch": {
    "l": 0.36762,
    "c": 0.13908,
    "h": 264.4
  },
  "luminance": 0.04676
}

Semantic roles & 50–950 ramp

primary

#183787

secondary

#BB9840

accent

#BB3BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #183787

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

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