#183E7A#183E7A

#183E7A is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.3% C 0.111 H 259.4°. Best body text is #FFFFFF at 10.45:1 contrast (WCAG AA passes).

Color values

HEX	#183E7A
RGB	rgb(24, 62, 122)
HSL	hsl(217, 67%, 29%)
HSV	hsv(217, 80%, 48%)
CMYK	cmyk(80.3%, 49.2%, 0%, 52.2%)
CIE-LAB	lab(26.86, 9.95, -38.04)
CIE-LCH	lch(26.86, 39.31, 284.66°)
OKLab	oklab(37.26% -0.0205 -0.1092)
OKLCH	oklch(37.26% 0.111 259.4)
XYZ	xyz(5.6109, 5.0439, 19.0864)
Luminance	0.0505 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E7A #7A5418

analogous

#186F7A #183E7A #23187A

triadic

#183E7A #7A183E #3E7A18

tetradic

#183E7A #7A186F #7A5418 #187A23

square

#183E7A #7A186F #7A5418 #187A23

split-complementary

#183E7A #7A2318 #6F7A18

monochromatic

#050D1A #0E2447 #183E7A #2258AD #3574D7

Accessibility & contrast

On white

10.45

#183E7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#183E7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E7A

10.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E7A	#FFFFFF	#000000	##FFFFFF
##183E7A	1.00	10.45	2.01	10.45
#FFFFFF	10.45	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D447C

Deuteranopia (green-blind)

#013B79

Tritanopia (blue-blind)

#004C56

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #183e7a;
/* rgb */ color: rgb(24, 62, 122);
/* oklch */ color: oklch(37.3% 0.111 259.4);

Tailwind

colors: {
  custom: {
    50: '#6572a1',
    500: '#183e7a',
    950: '#000000',
  },
}

SCSS

$custom: #183e7a;
$custom-light: #6572a1;
$custom-dark: #000000;

JSON

{
  "hex": "#183e7a",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 122
  },
  "hsl": {
    "h": 216.735,
    "s": 67.123,
    "l": 28.627
  },
  "oklch": {
    "l": 0.3726,
    "c": 0.11113,
    "h": 259.4
  },
  "luminance": 0.05045
}

Semantic roles & 50–950 ramp

primary

#183E7A

secondary

#AF833F

accent

#A73EEA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080F

muted

#7A7B7E

Preview Lab

Preview with #183E7A

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

Preview Lab → · Contrast checker → · Palette generator →