#12398E#12398E

#12398E is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.148 H 262.8°. Best body text is #FFFFFF at 10.49:1 contrast (WCAG AA passes).

Color values

HEX	#12398E
RGB	rgb(18, 57, 142)
HSL	hsl(221, 78%, 31%)
HSV	hsv(221, 87%, 56%)
CMYK	cmyk(87.3%, 59.9%, 0%, 44.3%)
CIE-LAB	lab(26.75, 21.16, -50.69)
CIE-LCH	lch(26.75, 54.93, 292.65°)
OKLab	oklab(37.62% -0.0184 -0.1466)
OKLCH	oklch(37.62% 0.148 262.8)
XYZ	xyz(6.5933, 5.0070, 26.2049)
Luminance	0.0501 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12398E #8E6712

analogous

#12778E #12398E #29128E

triadic

#12398E #8E1239 #398E12

tetradic

#12398E #8E1277 #8E6712 #128E29

square

#12398E #8E1277 #8E6712 #128E29

split-complementary

#12398E #8E2912 #778E12

monochromatic

#040D21 #0B2358 #12398E #194FC4 #356CE5

Accessibility & contrast

On white

10.49

#12398E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#12398E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12398E

10.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12398E	#FFFFFF	#000000	##FFFFFF
##12398E	1.00	10.49	2.00	10.49
#FFFFFF	10.49	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004591

Deuteranopia (green-blind)

#003A8C

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #12398e;
/* rgb */ color: rgb(18, 57, 142);
/* oklch */ color: oklch(37.6% 0.148 262.8);

Tailwind

colors: {
  custom: {
    50: '#696eb0',
    500: '#12398e',
    950: '#000000',
  },
}

SCSS

$custom: #12398e;
$custom-light: #696eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#12398e",
  "rgb": {
    "r": 18,
    "g": 57,
    "b": 142
  },
  "hsl": {
    "h": 221.129,
    "s": 77.5,
    "l": 31.373
  },
  "oklch": {
    "l": 0.37619,
    "c": 0.14778,
    "h": 262.8
  },
  "luminance": 0.05008
}

Semantic roles & 50–950 ramp

primary

#12398E

secondary

#C2973A

accent

#B834F4

background

#F6F6FA

surface

#ECEBF5

border

#C7C6CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #12398E

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

Preview Lab → · Contrast checker → · Palette generator →