#18377A#18377A

#18377A is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.6% C 0.120 H 263.0°. Best body text is #FFFFFF at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#18377A
RGB	rgb(24, 55, 122)
HSL	hsl(221, 67%, 29%)
HSV	hsv(221, 80%, 48%)
CMYK	cmyk(80.3%, 54.9%, 0%, 52.2%)
CIE-LAB	lab(24.74, 14.88, -41.46)
CIE-LCH	lch(24.74, 44.05, 289.74°)
OKLab	oklab(35.64% -0.0146 -0.1194)
OKLCH	oklch(35.64% 0.12 263)
XYZ	xyz(5.2545, 4.3311, 18.9676)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18377A #7A5B18

analogous

#18687A #18377A #2A187A

triadic

#18377A #7A1837 #377A18

tetradic

#18377A #7A1868 #7A5B18 #187A2A

square

#18377A #7A1868 #7A5B18 #187A2A

split-complementary

#18377A #7A2A18 #687A18

monochromatic

#050C1A #0E2047 #18377A #224EAD #3568D7

Accessibility & contrast

On white

11.25

#18377A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#18377A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18377A

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18377A	#FFFFFF	#000000	##FFFFFF
##18377A	1.00	11.25	1.87	11.25
#FFFFFF	11.25	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#063F7C

Deuteranopia (green-blind)

#003679

Tritanopia (blue-blind)

#004753

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #18377a;
/* rgb */ color: rgb(24, 55, 122);
/* oklch */ color: oklch(35.6% 0.120 263.0);

Tailwind

colors: {
  custom: {
    50: '#656da1',
    500: '#18377a',
    950: '#000000',
  },
}

SCSS

$custom: #18377a;
$custom-light: #656da1;
$custom-dark: #000000;

JSON

{
  "hex": "#18377a",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 122
  },
  "hsl": {
    "h": 221.02,
    "s": 67.123,
    "l": 28.627
  },
  "oklch": {
    "l": 0.35637,
    "c": 0.12034,
    "h": 263
  },
  "luminance": 0.04332
}

Semantic roles & 50–950 ramp

primary

#18377A

secondary

#AF8B3F

accent

#B43EEA

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #18377A

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

Preview Lab → · Contrast checker → · Palette generator →