#10263B#10263B

#10263B is a dark, muted cyan. Relative luminance 0.018; OKLCH L 26.2% C 0.049 H 249.2°. Best body text is #FFFFFF at 15.41:1 contrast (WCAG AA passes).

Color values

HEX	#10263B
RGB	rgb(16, 38, 59)
HSL	hsl(209, 57%, 15%)
HSV	hsv(209, 73%, 23%)
CMYK	cmyk(72.9%, 35.6%, 0%, 76.9%)
CIE-LAB	lab(14.47, -0.67, -16.09)
CIE-LCH	lch(14.47, 16.10, 267.60°)
OKLab	oklab(26.21% -0.0173 -0.0454)
OKLCH	oklch(26.21% 0.049 249.2)
XYZ	xyz(1.6959, 1.8120, 4.3972)
Luminance	0.0181 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10263B #3B2510

analogous

#103B3B #10263B #10113B

triadic

#10263B #3B1026 #263B10

tetradic

#10263B #3B103B #3B2510 #113B10

square

#10263B #3B103B #3B2510 #113B10

split-complementary

#10263B #3B1011 #3B3B10

monochromatic

#071018 #071018 #10263B #1D456B #2A649B

Accessibility & contrast

On white

15.41

#10263B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#10263B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10263B

15.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10263B	#FFFFFF	#000000	##FFFFFF
##10263B	1.00	15.41	1.36	15.41
#FFFFFF	15.41	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D273C

Deuteranopia (green-blind)

#17233B

Tritanopia (blue-blind)

#002B2D

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #10263b;
/* rgb */ color: rgb(16, 38, 59);
/* oklch */ color: oklch(26.2% 0.049 249.2);

Tailwind

colors: {
  custom: {
    50: '#536071',
    500: '#10263b',
    950: '#000000',
  },
}

SCSS

$custom: #10263b;
$custom-light: #536071;
$custom-dark: #000000;

JSON

{
  "hex": "#10263b",
  "rgb": {
    "r": 16,
    "g": 38,
    "b": 59
  },
  "hsl": {
    "h": 209.302,
    "s": 57.333,
    "l": 14.706
  },
  "oklch": {
    "l": 0.26206,
    "c": 0.04859,
    "h": 249.2
  },
  "luminance": 0.01812
}

Semantic roles & 50–950 ramp

primary

#10263B

secondary

#755332

accent

#9247E1

background

#F4F5F6

surface

#E8E9EC

border

#C4C5C7

text

#030407

muted

#78797A

Preview Lab

Preview with #10263B

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

Preview Lab → · Contrast checker → · Palette generator →