#12537E#12537E

#12537E is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.6% C 0.095 H 243.6°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#12537E
RGB	rgb(18, 83, 126)
HSL	hsl(204, 75%, 28%)
HSV	hsv(204, 86%, 49%)
CMYK	cmyk(85.7%, 34.1%, 0%, 50.6%)
CIE-LAB	lab(33.61, -3.17, -29.79)
CIE-LCH	lch(33.61, 29.95, 263.92°)
OKLab	oklab(42.56% -0.0421 -0.0847)
OKLCH	oklch(42.56% 0.095 243.6)
XYZ	xyz(7.1071, 7.8206, 20.8696)
Luminance	0.0782 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12537E #7E3D12

analogous

#127E73 #12537E #121D7E

triadic

#12537E #7E1253 #537E12

tetradic

#12537E #73127E #7E3D12 #1D7E12

square

#12537E #73127E #7E3D12 #1D7E12

split-complementary

#12537E #7E121D #7E7312

monochromatic

#04121B #0A3048 #12537E #1A76B4 #2A98E1

Accessibility & contrast

On white

8.19

#12537E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#12537E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12537E

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12537E	#FFFFFF	#000000	##FFFFFF
##12537E	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F5480

Deuteranopia (green-blind)

#304B7D

Tritanopia (blue-blind)

#005E62

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #12537e;
/* rgb */ color: rgb(18, 83, 126);
/* oklch */ color: oklch(42.6% 0.095 243.6);

Tailwind

colors: {
  custom: {
    50: '#6483a3',
    500: '#12537e',
    950: '#000000',
  },
}

SCSS

$custom: #12537e;
$custom-light: #6483a3;
$custom-dark: #000000;

JSON

{
  "hex": "#12537e",
  "rgb": {
    "r": 18,
    "g": 83,
    "b": 126
  },
  "hsl": {
    "h": 203.889,
    "s": 75,
    "l": 28.235
  },
  "oklch": {
    "l": 0.4256,
    "c": 0.09454,
    "h": 243.6
  },
  "luminance": 0.07821
}

Semantic roles & 50–950 ramp

primary

#12537E

secondary

#B46938

accent

#8136F2

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#060A0F

muted

#7A7C7F

Preview Lab

Preview with #12537E

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

Preview Lab → · Contrast checker → · Palette generator →