#10273B#10273B

#10273B is a dark, muted cyan. Relative luminance 0.019; OKLCH L 26.5% C 0.048 H 247.0°. Best body text is #FFFFFF at 15.27:1 contrast (WCAG AA passes).

Color values

HEX	#10273B
RGB	rgb(16, 39, 59)
HSL	hsl(208, 57%, 15%)
HSV	hsv(208, 73%, 23%)
CMYK	cmyk(72.9%, 33.9%, 0%, 76.9%)
CIE-LAB	lab(14.83, -1.39, -15.52)
CIE-LCH	lch(14.83, 15.59, 264.87°)
OKLab	oklab(26.49% -0.0186 -0.0438)
OKLCH	oklch(26.49% 0.048 247)
XYZ	xyz(1.7283, 1.8768, 4.4080)
Luminance	0.0188 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10273B #3B2410

analogous

#103B3A #10273B #10123B

triadic

#10273B #3B1027 #273B10

tetradic

#10273B #3A103B #3B2410 #123B10

square

#10273B #3A103B #3B2410 #123B10

split-complementary

#10273B #3B1012 #3B3A10

monochromatic

#071018 #071018 #10273B #1D476B #2A679B

Accessibility & contrast

On white

15.27

#10273B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#10273B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10273B

15.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10273B	#FFFFFF	#000000	##FFFFFF
##10273B	1.00	15.27	1.38	15.27
#FFFFFF	15.27	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E283C

Deuteranopia (green-blind)

#18233B

Tritanopia (blue-blind)

#002C2E

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #10273b;
/* rgb */ color: rgb(16, 39, 59);
/* oklch */ color: oklch(26.5% 0.048 247.0);

Tailwind

colors: {
  custom: {
    50: '#536071',
    500: '#10273b',
    950: '#000000',
  },
}

SCSS

$custom: #10273b;
$custom-light: #536071;
$custom-dark: #000000;

JSON

{
  "hex": "#10273b",
  "rgb": {
    "r": 16,
    "g": 39,
    "b": 59
  },
  "hsl": {
    "h": 207.907,
    "s": 57.333,
    "l": 14.706
  },
  "oklch": {
    "l": 0.26489,
    "c": 0.04756,
    "h": 247
  },
  "luminance": 0.01877
}

Semantic roles & 50–950 ramp

primary

#10273B

secondary

#755132

accent

#8F47E1

background

#F4F5F6

surface

#E8E9EC

border

#C4C5C7

text

#030507

muted

#78797A

Preview Lab

Preview with #10273B

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

Preview Lab → · Contrast checker → · Palette generator →