#12398D#12398D

#12398D is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.5% C 0.146 H 262.7°. Best body text is #FFFFFF at 10.52:1 contrast (WCAG AA passes).

Color values

HEX	#12398D
RGB	rgb(18, 57, 141)
HSL	hsl(221, 77%, 31%)
HSV	hsv(221, 87%, 55%)
CMYK	cmyk(87.2%, 59.6%, 0%, 44.7%)
CIE-LAB	lab(26.67, 20.74, -50.21)
CIE-LCH	lch(26.67, 54.33, 292.45°)
OKLab	oklab(37.53% -0.0185 -0.1452)
OKLCH	oklch(37.53% 0.146 262.7)
XYZ	xyz(6.5186, 4.9771, 25.8113)
Luminance	0.0498 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12398D #8D6612

analogous

#12768D #12398D #29128D

triadic

#12398D #8D1239 #398D12

tetradic

#12398D #8D1276 #8D6612 #128D29

square

#12398D #8D1276 #8D6612 #128D29

split-complementary

#12398D #8D2912 #768D12

monochromatic

#040D20 #0B2357 #12398D #194FC3 #346CE5

Accessibility & contrast

On white

10.52

#12398D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#12398D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12398D

10.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12398D	#FFFFFF	#000000	##FFFFFF
##12398D	1.00	10.52	2.00	10.52
#FFFFFF	10.52	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004590

Deuteranopia (green-blind)

#003A8B

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #12398d;
/* rgb */ color: rgb(18, 57, 141);
/* oklch */ color: oklch(37.5% 0.146 262.7);

Tailwind

colors: {
  custom: {
    50: '#696eaf',
    500: '#12398d',
    950: '#000000',
  },
}

SCSS

$custom: #12398d;
$custom-light: #696eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#12398d",
  "rgb": {
    "r": 18,
    "g": 57,
    "b": 141
  },
  "hsl": {
    "h": 220.976,
    "s": 77.358,
    "l": 31.176
  },
  "oklch": {
    "l": 0.37528,
    "c": 0.14638,
    "h": 262.7
  },
  "luminance": 0.04978
}

Semantic roles & 50–950 ramp

primary

#12398D

secondary

#C19639

accent

#B734F4

background

#F6F6FA

surface

#ECEBF5

border

#C7C6CF

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #12398D

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

Preview Lab → · Contrast checker → · Palette generator →