#123B57#123B57

#123B57 is a dark, moderate cyan. Relative luminance 0.039; OKLCH L 33.9% C 0.067 H 242.5°. Best body text is #FFFFFF at 11.74:1 contrast (WCAG AA passes).

Color values

HEX	#123B57
RGB	rgb(18, 59, 87)
HSL	hsl(204, 66%, 21%)
HSV	hsv(204, 79%, 34%)
CMYK	cmyk(79.3%, 32.2%, 0%, 65.9%)
CIE-LAB	lab(23.49, -3.33, -20.91)
CIE-LCH	lch(23.49, 21.17, 260.95°)
OKLab	oklab(33.86% -0.0308 -0.0591)
OKLCH	oklch(33.86% 0.067 242.5)
XYZ	xyz(3.5331, 3.9442, 9.5901)
Luminance	0.0394 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123B57 #572E12

analogous

#125750 #123B57 #121857

triadic

#123B57 #57123B #3B5712

tetradic

#123B57 #501257 #572E12 #185712

square

#123B57 #501257 #572E12 #185712

split-complementary

#123B57 #571218 #575012

monochromatic

#051119 #081924 #123B57 #1C5D8A #2780BC

Accessibility & contrast

On white

11.74

#123B57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#123B57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B57

11.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123B57	#FFFFFF	#000000	##FFFFFF
##123B57	1.00	11.74	1.79	11.74
#FFFFFF	11.74	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3C58

Deuteranopia (green-blind)

#253556

Tritanopia (blue-blind)

#004245

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #123b57;
/* rgb */ color: rgb(18, 59, 87);
/* oklch */ color: oklch(33.9% 0.067 242.5);

Tailwind

colors: {
  custom: {
    50: '#5b7086',
    500: '#123b57',
    950: '#000000',
  },
}

SCSS

$custom: #123b57;
$custom-light: #5b7086;
$custom-dark: #000000;

JSON

{
  "hex": "#123b57",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 87
  },
  "hsl": {
    "h": 204.348,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.3386,
    "c": 0.06667,
    "h": 242.5
  },
  "luminance": 0.03945
}

Semantic roles & 50–950 ramp

primary

#123B57

secondary

#905A35

accent

#843FE9

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123B57

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

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