#12537F#12537F

#12537F is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.6% C 0.096 H 244.2°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#12537F
RGB	rgb(18, 83, 127)
HSL	hsl(204, 75%, 28%)
HSV	hsv(204, 86%, 50%)
CMYK	cmyk(85.8%, 34.6%, 0%, 50.2%)
CIE-LAB	lab(33.66, -2.77, -30.32)
CIE-LCH	lch(33.66, 30.44, 264.78°)
OKLab	oklab(42.62% -0.0417 -0.0862)
OKLCH	oklch(42.62% 0.096 244.2)
XYZ	xyz(7.1720, 7.8465, 21.2111)
Luminance	0.0785 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12537F #7F3E12

analogous

#127F74 #12537F #121D7F

triadic

#12537F #7F1253 #537F12

tetradic

#12537F #74127F #7F3E12 #1D7F12

square

#12537F #74127F #7F3E12 #1D7F12

split-complementary

#12537F #7F121D #7F7412

monochromatic

#04121B #0A3049 #12537F #1A76B5 #2B97E1

Accessibility & contrast

On white

8.17

#12537F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#12537F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12537F

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12537F	#FFFFFF	#000000	##FFFFFF
##12537F	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E5581

Deuteranopia (green-blind)

#2F4B7E

Tritanopia (blue-blind)

#005E63

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #12537f;
/* rgb */ color: rgb(18, 83, 127);
/* oklch */ color: oklch(42.6% 0.096 244.2);

Tailwind

colors: {
  custom: {
    50: '#6583a4',
    500: '#12537f',
    950: '#000000',
  },
}

SCSS

$custom: #12537f;
$custom-light: #6583a4;
$custom-dark: #000000;

JSON

{
  "hex": "#12537f",
  "rgb": {
    "r": 18,
    "g": 83,
    "b": 127
  },
  "hsl": {
    "h": 204.22,
    "s": 75.172,
    "l": 28.431
  },
  "oklch": {
    "l": 0.42622,
    "c": 0.0958,
    "h": 244.2
  },
  "luminance": 0.07847
}

Semantic roles & 50–950 ramp

primary

#12537F

secondary

#B56A38

accent

#8236F2

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#060A0F

muted

#7A7C7F

Preview Lab

Preview with #12537F

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

Preview Lab → · Contrast checker → · Palette generator →