#183E7D#183E7D

#183E7D is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.5% C 0.116 H 260.0°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#183E7D
RGB	rgb(24, 62, 125)
HSL	hsl(217, 68%, 29%)
HSV	hsv(217, 81%, 49%)
CMYK	cmyk(80.8%, 50.4%, 0%, 51%)
CIE-LAB	lab(27.07, 11.19, -39.58)
CIE-LCH	lch(27.07, 41.13, 285.78°)
OKLab	oklab(37.49% -0.02 -0.1138)
OKLCH	oklch(37.49% 0.116 260)
XYZ	xyz(5.7996, 5.1194, 20.0805)
Luminance	0.0512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E7D #7D5718

analogous

#18717D #183E7D #25187D

triadic

#183E7D #7D183E #3E7D18

tetradic

#183E7D #7D1871 #7D5718 #187D25

square

#183E7D #7D1871 #7D5718 #187D25

split-complementary

#183E7D #7D2518 #717D18

monochromatic

#050D1A #0E254A #183E7D #2257B0 #3774D9

Accessibility & contrast

On white

10.38

#183E7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#183E7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E7D

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E7D	#FFFFFF	#000000	##FFFFFF
##183E7D	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A457F

Deuteranopia (green-blind)

#003C7C

Tritanopia (blue-blind)

#004D57

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #183e7d;
/* rgb */ color: rgb(24, 62, 125);
/* oklch */ color: oklch(37.5% 0.116 260.0);

Tailwind

colors: {
  custom: {
    50: '#6672a3',
    500: '#183e7d',
    950: '#000000',
  },
}

SCSS

$custom: #183e7d;
$custom-light: #6672a3;
$custom-dark: #000000;

JSON

{
  "hex": "#183e7d",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 125
  },
  "hsl": {
    "h": 217.426,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.37491,
    "c": 0.11552,
    "h": 260
  },
  "luminance": 0.0512
}

Semantic roles & 50–950 ramp

primary

#183E7D

secondary

#B2873F

accent

#A93DEB

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #183E7D

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

Preview Lab → · Contrast checker → · Palette generator →