#183D7A#183D7A

#183D7A is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.0% C 0.112 H 259.9°. Best body text is #FFFFFF at 10.57:1 contrast (WCAG AA passes).

Color values

HEX	#183D7A
RGB	rgb(24, 61, 122)
HSL	hsl(217, 67%, 29%)
HSV	hsv(217, 80%, 48%)
CMYK	cmyk(80.3%, 50%, 0%, 52.2%)
CIE-LAB	lab(26.55, 10.65, -38.53)
CIE-LCH	lch(26.55, 39.97, 285.45°)
OKLab	oklab(37.02% -0.0196 -0.1107)
OKLCH	oklch(37.02% 0.112 259.9)
XYZ	xyz(5.5570, 4.9362, 19.0685)
Luminance	0.0494 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D7A #7A5518

analogous

#186E7A #183D7A #24187A

triadic

#183D7A #7A183D #3D7A18

tetradic

#183D7A #7A186E #7A5518 #187A24

square

#183D7A #7A186E #7A5518 #187A24

split-complementary

#183D7A #7A2418 #6E7A18

monochromatic

#050D1A #0E2347 #183D7A #2257AD #3572D7

Accessibility & contrast

On white

10.57

#183D7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#183D7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D7A

10.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D7A	#FFFFFF	#000000	##FFFFFF
##183D7A	1.00	10.57	1.99	10.57
#FFFFFF	10.57	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A447C

Deuteranopia (green-blind)

#003B79

Tritanopia (blue-blind)

#004C55

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #183d7a;
/* rgb */ color: rgb(24, 61, 122);
/* oklch */ color: oklch(37.0% 0.112 259.9);

Tailwind

colors: {
  custom: {
    50: '#6571a1',
    500: '#183d7a',
    950: '#000000',
  },
}

SCSS

$custom: #183d7a;
$custom-light: #6571a1;
$custom-dark: #000000;

JSON

{
  "hex": "#183d7a",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 122
  },
  "hsl": {
    "h": 217.347,
    "s": 67.123,
    "l": 28.627
  },
  "oklch": {
    "l": 0.37023,
    "c": 0.11243,
    "h": 259.9
  },
  "luminance": 0.04937
}

Semantic roles & 50–950 ramp

primary

#183D7A

secondary

#AF853F

accent

#A93EEA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070F

muted

#7A7A7E

Preview Lab

Preview with #183D7A

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

Preview Lab → · Contrast checker → · Palette generator →