#183D7E#183D7E

#183D7E is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.3% C 0.118 H 260.7°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#183D7E
RGB	rgb(24, 61, 126)
HSL	hsl(218, 68%, 29%)
HSV	hsv(218, 81%, 49%)
CMYK	cmyk(81%, 51.6%, 0%, 50.6%)
CIE-LAB	lab(26.84, 12.30, -40.58)
CIE-LCH	lch(26.84, 42.40, 286.87°)
OKLab	oklab(37.34% -0.019 -0.1167)
OKLCH	oklch(37.34% 0.118 260.7)
XYZ	xyz(5.8100, 5.0374, 20.4007)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D7E #7E5918

analogous

#18707E #183D7E #26187E

triadic

#183D7E #7E183D #3D7E18

tetradic

#183D7E #7E1870 #7E5918 #187E26

square

#183D7E #7E1870 #7E5918 #187E26

split-complementary

#183D7E #7E2618 #707E18

monochromatic

#050C1A #0E244B #183D7E #2256B1 #3772D9

Accessibility & contrast

On white

10.46

#183D7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#183D7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D7E

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D7E	#FFFFFF	#000000	##FFFFFF
##183D7E	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#164480

Deuteranopia (green-blind)

#003B7D

Tritanopia (blue-blind)

#004D57

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #183d7e;
/* rgb */ color: rgb(24, 61, 126);
/* oklch */ color: oklch(37.3% 0.118 260.7);

Tailwind

colors: {
  custom: {
    50: '#6671a4',
    500: '#183d7e',
    950: '#000000',
  },
}

SCSS

$custom: #183d7e;
$custom-light: #6671a4;
$custom-dark: #000000;

JSON

{
  "hex": "#183d7e",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 126
  },
  "hsl": {
    "h": 218.235,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.37337,
    "c": 0.11827,
    "h": 260.7
  },
  "luminance": 0.05038
}

Semantic roles & 50–950 ramp

primary

#183D7E

secondary

#B2893F

accent

#AC3DEB

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #183D7E

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

Preview Lab → · Contrast checker → · Palette generator →