#12437D#12437D

#12437D is a dark, moderate cyan. Relative luminance 0.056; OKLCH L 38.5% C 0.111 H 255.4°. Best body text is #FFFFFF at 9.88:1 contrast (WCAG AA passes).

Color values

HEX	#12437D
RGB	rgb(18, 67, 125)
HSL	hsl(213, 75%, 28%)
HSV	hsv(213, 86%, 49%)
CMYK	cmyk(85.6%, 46.4%, 0%, 51%)
CIE-LAB	lab(28.44, 7.06, -37.39)
CIE-LCH	lch(28.44, 38.05, 280.69°)
OKLab	oklab(38.5% -0.0279 -0.1073)
OKLCH	oklch(38.5% 0.111 255.4)
XYZ	xyz(5.9569, 5.6228, 20.1694)
Luminance	0.0562 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12437D #7D4C12

analogous

#12787D #12437D #16127D

triadic

#12437D #7D1243 #437D12

tetradic

#12437D #7D1278 #7D4C12 #127D16

square

#12437D #7D1278 #7D4C12 #127D16

split-complementary

#12437D #7D1612 #787D12

monochromatic

#040E1B #0A2648 #12437D #1A60B2 #297DE0

Accessibility & contrast

On white

9.88

#12437D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#12437D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12437D

9.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12437D	#FFFFFF	#000000	##FFFFFF
##12437D	1.00	9.88	2.12	9.88
#FFFFFF	9.88	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#24487F

Deuteranopia (green-blind)

#0C3F7C

Tritanopia (blue-blind)

#00515A

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #12437d;
/* rgb */ color: rgb(18, 67, 125);
/* oklch */ color: oklch(38.5% 0.111 255.4);

Tailwind

colors: {
  custom: {
    50: '#6476a3',
    500: '#12437d',
    950: '#000000',
  },
}

SCSS

$custom: #12437d;
$custom-light: #6476a3;
$custom-dark: #000000;

JSON

{
  "hex": "#12437d",
  "rgb": {
    "r": 18,
    "g": 67,
    "b": 125
  },
  "hsl": {
    "h": 212.523,
    "s": 74.825,
    "l": 28.039
  },
  "oklch": {
    "l": 0.38495,
    "c": 0.11086,
    "h": 255.4
  },
  "luminance": 0.05624
}

Semantic roles & 50–950 ramp

primary

#12437D

secondary

#B37B38

accent

#9C36F1

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#06080F

muted

#7A7B7F

Preview Lab

Preview with #12437D

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

Preview Lab → · Contrast checker → · Palette generator →