#12398F#12398F

#12398F is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.7% C 0.149 H 262.9°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#12398F
RGB	rgb(18, 57, 143)
HSL	hsl(221, 78%, 32%)
HSV	hsv(221, 87%, 56%)
CMYK	cmyk(87.4%, 60.1%, 0%, 43.9%)
CIE-LAB	lab(26.84, 21.57, -51.17)
CIE-LCH	lch(26.84, 55.53, 292.85°)
OKLab	oklab(37.71% -0.0184 -0.148)
OKLCH	oklch(37.71% 0.149 262.9)
XYZ	xyz(6.6687, 5.0372, 26.6021)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12398F #8F6812

analogous

#12788F #12398F #2A128F

triadic

#12398F #8F1239 #398F12

tetradic

#12398F #8F1278 #8F6812 #128F2A

square

#12398F #8F1278 #8F6812 #128F2A

split-complementary

#12398F #8F2A12 #788F12

monochromatic

#040E22 #0B2359 #12398F #194FC5 #366DE6

Accessibility & contrast

On white

10.46

#12398F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#12398F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12398F

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12398F	#FFFFFF	#000000	##FFFFFF
##12398F	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004592

Deuteranopia (green-blind)

#003A8D

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #12398f;
/* rgb */ color: rgb(18, 57, 143);
/* oklch */ color: oklch(37.7% 0.149 262.9);

Tailwind

colors: {
  custom: {
    50: '#6a6eb1',
    500: '#12398f',
    950: '#000000',
  },
}

SCSS

$custom: #12398f;
$custom-light: #6a6eb1;
$custom-dark: #000000;

JSON

{
  "hex": "#12398f",
  "rgb": {
    "r": 18,
    "g": 57,
    "b": 143
  },
  "hsl": {
    "h": 221.28,
    "s": 77.64,
    "l": 31.569
  },
  "oklch": {
    "l": 0.3771,
    "c": 0.14916,
    "h": 262.9
  },
  "luminance": 0.05038
}

Semantic roles & 50–950 ramp

primary

#12398F

secondary

#C3983A

accent

#B834F4

background

#F6F6FB

surface

#ECEBF6

border

#C7C6D0

text

#080711

muted

#7A7A80

Preview Lab

Preview with #12398F

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

Preview Lab → · Contrast checker → · Palette generator →