#183B7A#183B7A

#183B7A is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.6% C 0.115 H 261.0°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#183B7A
RGB	rgb(24, 59, 122)
HSL	hsl(219, 67%, 29%)
HSV	hsv(219, 80%, 48%)
CMYK	cmyk(80.3%, 51.6%, 0%, 52.2%)
CIE-LAB	lab(25.94, 12.05, -39.52)
CIE-LCH	lch(25.94, 41.31, 286.96°)
OKLab	oklab(36.56% -0.0179 -0.1136)
OKLCH	oklch(36.56% 0.115 261)
XYZ	xyz(5.4522, 4.7266, 19.0336)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183B7A #7A5718

analogous

#186C7A #183B7A #26187A

triadic

#183B7A #7A183B #3B7A18

tetradic

#183B7A #7A186C #7A5718 #187A26

square

#183B7A #7A186C #7A5718 #187A26

split-complementary

#183B7A #7A2618 #6C7A18

monochromatic

#050C1A #0E2247 #183B7A #2254AD #356FD7

Accessibility & contrast

On white

10.79

#183B7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#183B7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183B7A

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183B7A	#FFFFFF	#000000	##FFFFFF
##183B7A	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15427C

Deuteranopia (green-blind)

#003979

Tritanopia (blue-blind)

#004A54

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #183b7a;
/* rgb */ color: rgb(24, 59, 122);
/* oklch */ color: oklch(36.6% 0.115 261.0);

Tailwind

colors: {
  custom: {
    50: '#6570a1',
    500: '#183b7a',
    950: '#000000',
  },
}

SCSS

$custom: #183b7a;
$custom-light: #6570a1;
$custom-dark: #000000;

JSON

{
  "hex": "#183b7a",
  "rgb": {
    "r": 24,
    "g": 59,
    "b": 122
  },
  "hsl": {
    "h": 218.571,
    "s": 67.123,
    "l": 28.627
  },
  "oklch": {
    "l": 0.36555,
    "c": 0.11504,
    "h": 261
  },
  "luminance": 0.04727
}

Semantic roles & 50–950 ramp

primary

#183B7A

secondary

#AF873F

accent

#AD3EEA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070F

muted

#7A7A7E

Preview Lab

Preview with #183B7A

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

Preview Lab → · Contrast checker → · Palette generator →