#12375B#12375B

#12375B is a dark, moderate cyan. Relative luminance 0.036; OKLCH L 33.0% C 0.076 H 250.8°. Best body text is #FFFFFF at 12.19:1 contrast (WCAG AA passes).

Color values

HEX	#12375B
RGB	rgb(18, 55, 91)
HSL	hsl(210, 67%, 21%)
HSV	hsv(210, 80%, 36%)
CMYK	cmyk(80.2%, 39.6%, 0%, 64.3%)
CIE-LAB	lab(22.36, 1.06, -25.31)
CIE-LCH	lch(22.36, 25.34, 272.40°)
OKLab	oklab(33.05% -0.0251 -0.0721)
OKLCH	oklch(33.05% 0.076 250.8)
XYZ	xyz(3.5033, 3.6159, 10.4088)
Luminance	0.0362 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12375B #5B3612

analogous

#125B5B #12375B #12135B

triadic

#12375B #5B1237 #375B12

tetradic

#12375B #5B125B #5B3612 #135B12

square

#12375B #5B125B #5B3612 #135B12

split-complementary

#12375B #5B1213 #5B5B12

monochromatic

#050F1A #081828 #12375B #1C568E #2675C1

Accessibility & contrast

On white

12.19

#12375B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#12375B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12375B

12.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12375B	#FFFFFF	#000000	##FFFFFF
##12375B	1.00	12.19	1.72	12.19
#FFFFFF	12.19	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26395C

Deuteranopia (green-blind)

#1B325A

Tritanopia (blue-blind)

#004044

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #12375b;
/* rgb */ color: rgb(18, 55, 91);
/* oklch */ color: oklch(33.0% 0.076 250.8);

Tailwind

colors: {
  custom: {
    50: '#5c6d89',
    500: '#12375b',
    950: '#000000',
  },
}

SCSS

$custom: #12375b;
$custom-light: #5c6d89;
$custom-dark: #000000;

JSON

{
  "hex": "#12375b",
  "rgb": {
    "r": 18,
    "g": 55,
    "b": 91
  },
  "hsl": {
    "h": 209.589,
    "s": 66.972,
    "l": 21.373
  },
  "oklch": {
    "l": 0.33048,
    "c": 0.07632,
    "h": 250.8
  },
  "luminance": 0.03616
}

Semantic roles & 50–950 ramp

primary

#12375B

secondary

#936435

accent

#933EEA

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#04070B

muted

#797A7C

Preview Lab

Preview with #12375B

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

Preview Lab → · Contrast checker → · Palette generator →