#18307B#18307B

#18307B is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.2% C 0.131 H 266.0°. Best body text is #FFFFFF at 12.02:1 contrast (WCAG AA passes).

Color values

HEX	#18307B
RGB	rgb(24, 48, 123)
HSL	hsl(225, 67%, 29%)
HSV	hsv(225, 80%, 48%)
CMYK	cmyk(80.5%, 61%, 0%, 51.8%)
CIE-LAB	lab(22.78, 20.27, -45.27)
CIE-LCH	lch(22.78, 49.60, 294.12°)
OKLab	oklab(34.19% -0.0092 -0.1308)
OKLCH	oklch(34.19% 0.131 266)
XYZ	xyz(5.0075, 3.7376, 19.1926)
Luminance	0.0374 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18307B #7B6318

analogous

#18627B #18307B #32187B

triadic

#18307B #7B1830 #307B18

tetradic

#18307B #7B1862 #7B6318 #187B32

square

#18307B #7B1862 #7B6318 #187B32

split-complementary

#18307B #7B3218 #627B18

monochromatic

#050A1A #0E1C48 #18307B #2244AE #365DD8

Accessibility & contrast

On white

12.02

#18307B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#18307B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18307B

12.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18307B	#FFFFFF	#000000	##FFFFFF
##18307B	1.00	12.02	1.75	12.02
#FFFFFF	12.02	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B7E

Deuteranopia (green-blind)

#00327A

Tritanopia (blue-blind)

#004350

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #18307b;
/* rgb */ color: rgb(24, 48, 123);
/* oklch */ color: oklch(34.2% 0.131 266.0);

Tailwind

colors: {
  custom: {
    50: '#6667a2',
    500: '#18307b',
    950: '#000000',
  },
}

SCSS

$custom: #18307b;
$custom-light: #6667a2;
$custom-dark: #000000;

JSON

{
  "hex": "#18307b",
  "rgb": {
    "r": 24,
    "g": 48,
    "b": 123
  },
  "hsl": {
    "h": 225.455,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.34191,
    "c": 0.13109,
    "h": 266
  },
  "luminance": 0.03738
}

Semantic roles & 50–950 ramp

primary

#18307B

secondary

#B0943F

accent

#C03EEA

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #18307B

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

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