#10243A#10243A

#10243A is a dark, muted cyan. Relative luminance 0.017; OKLCH L 25.6% C 0.049 H 252.3°. Best body text is #FFFFFF at 15.73:1 contrast (WCAG AA passes).

Color values

HEX	#10243A
RGB	rgb(16, 36, 58)
HSL	hsl(211, 57%, 15%)
HSV	hsv(211, 72%, 23%)
CMYK	cmyk(72.4%, 37.9%, 0%, 77.3%)
CIE-LAB	lab(13.69, 0.37, -16.60)
CIE-LCH	lch(13.69, 16.61, 271.28°)
OKLab	oklab(25.58% -0.015 -0.0469)
OKLCH	oklch(25.58% 0.049 252.3)
XYZ	xyz(1.6080, 1.6772, 4.2412)
Luminance	0.0168 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10243A #3A2610

analogous

#10393A #10243A #11103A

triadic

#10243A #3A1024 #243A10

tetradic

#10243A #3A1039 #3A2610 #103A11

square

#10243A #3A1039 #3A2610 #103A11

split-complementary

#10243A #3A1110 #393A10

monochromatic

#070F18 #070F18 #10243A #1D426A #2A609A

Accessibility & contrast

On white

15.73

#10243A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#10243A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10243A

15.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10243A	#FFFFFF	#000000	##FFFFFF
##10243A	1.00	15.73	1.34	15.73
#FFFFFF	15.73	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B253B

Deuteranopia (green-blind)

#15213A

Tritanopia (blue-blind)

#00292C

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #10243a;
/* rgb */ color: rgb(16, 36, 58);
/* oklch */ color: oklch(25.6% 0.049 252.3);

Tailwind

colors: {
  custom: {
    50: '#535e70',
    500: '#10243a',
    950: '#000000',
  },
}

SCSS

$custom: #10243a;
$custom-light: #535e70;
$custom-dark: #000000;

JSON

{
  "hex": "#10243a",
  "rgb": {
    "r": 16,
    "g": 36,
    "b": 58
  },
  "hsl": {
    "h": 211.429,
    "s": 56.757,
    "l": 14.51
  },
  "oklch": {
    "l": 0.25579,
    "c": 0.04928,
    "h": 252.3
  },
  "luminance": 0.01677
}

Semantic roles & 50–950 ramp

primary

#10243A

secondary

#745432

accent

#9848E0

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#030407

muted

#78797A

Preview Lab

Preview with #10243A

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

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