#123258#123258

#123258 is a dark, moderate cyan. Relative luminance 0.031; OKLCH L 31.5% C 0.078 H 254.6°. Best body text is #FFFFFF at 12.94:1 contrast (WCAG AA passes).

Color values

HEX	#123258
RGB	rgb(18, 50, 88)
HSL	hsl(213, 66%, 21%)
HSV	hsv(213, 80%, 35%)
CMYK	cmyk(79.5%, 43.2%, 0%, 65.5%)
CIE-LAB	lab(20.49, 3.32, -26.30)
CIE-LCH	lch(20.49, 26.50, 277.19°)
OKLab	oklab(31.53% -0.0207 -0.075)
OKLCH	oklch(31.53% 0.078 254.6)
XYZ	xyz(3.1509, 3.1140, 9.6656)
Luminance	0.0311 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123258 #583812

analogous

#125558 #123258 #151258

triadic

#123258 #581232 #325812

tetradic

#123258 #581255 #583812 #125815

square

#123258 #581255 #583812 #125815

split-complementary

#123258 #581512 #555812

monochromatic

#050E19 #081525 #123258 #1C4F8B #276CBE

Accessibility & contrast

On white

12.94

#123258 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#123258 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123258

12.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123258	#FFFFFF	#000000	##FFFFFF
##123258	1.00	12.94	1.62	12.94
#FFFFFF	12.94	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20355A

Deuteranopia (green-blind)

#152E57

Tritanopia (blue-blind)

#003B40

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #123258;
/* rgb */ color: rgb(18, 50, 88);
/* oklch */ color: oklch(31.5% 0.078 254.6);

Tailwind

colors: {
  custom: {
    50: '#5b6987',
    500: '#123258',
    950: '#000000',
  },
}

SCSS

$custom: #123258;
$custom-light: #5b6987;
$custom-dark: #000000;

JSON

{
  "hex": "#123258",
  "rgb": {
    "r": 18,
    "g": 50,
    "b": 88
  },
  "hsl": {
    "h": 212.571,
    "s": 66.038,
    "l": 20.784
  },
  "oklch": {
    "l": 0.31531,
    "c": 0.07785,
    "h": 254.6
  },
  "luminance": 0.03114
}

Semantic roles & 50–950 ramp

primary

#123258

secondary

#916735

accent

#9B3FE9

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060B

muted

#797A7C

Preview Lab

Preview with #123258

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

Preview Lab → · Contrast checker → · Palette generator →