#10275B#10275B

#10275B is a dark, moderate blue. Relative luminance 0.023; OKLCH L 28.9% C 0.098 H 263.5°. Best body text is #FFFFFF at 14.35:1 contrast (WCAG AA passes).

Color values

HEX	#10275B
RGB	rgb(16, 39, 91)
HSL	hsl(222, 70%, 21%)
HSV	hsv(222, 82%, 36%)
CMYK	cmyk(82.4%, 57.1%, 0%, 64.3%)
CIE-LAB	lab(17.07, 12.39, -33.80)
CIE-LCH	lch(17.07, 36.00, 290.13°)
OKLab	oklab(28.94% -0.0111 -0.0974)
OKLCH	oklch(28.94% 0.098 263.5)
XYZ	xyz(2.8269, 2.3162, 10.1936)
Luminance	0.0232 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10275B #5B4410

analogous

#104C5B #10275B #1E105B

triadic

#10275B #5B1027 #275B10

tetradic

#10275B #5B104C #5B4410 #105B1E

square

#10275B #5B104C #5B4410 #105B1E

split-complementary

#10275B #5B1E10 #4C5B10

monochromatic

#050B1A #071127 #10275B #193D8F #2254C3

Accessibility & contrast

On white

14.35

#10275B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#10275B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10275B

14.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10275B	#FFFFFF	#000000	##FFFFFF
##10275B	1.00	14.35	1.46	14.35
#FFFFFF	14.35	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#022E5D

Deuteranopia (green-blind)

#00275A

Tritanopia (blue-blind)

#00343C

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #10275b;
/* rgb */ color: rgb(16, 39, 91);
/* oklch */ color: oklch(28.9% 0.098 263.5);

Tailwind

colors: {
  custom: {
    50: '#5b608a',
    500: '#10275b',
    950: '#000000',
  },
}

SCSS

$custom: #10275b;
$custom-light: #5b608a;
$custom-dark: #000000;

JSON

{
  "hex": "#10275b",
  "rgb": {
    "r": 16,
    "g": 39,
    "b": 91
  },
  "hsl": {
    "h": 221.6,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.28941,
    "c": 0.09801,
    "h": 263.5
  },
  "luminance": 0.02317
}

Semantic roles & 50–950 ramp

primary

#10275B

secondary

#947633

accent

#B63BED

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#04040C

muted

#79797D

Preview Lab

Preview with #10275B

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

Preview Lab → · Contrast checker → · Palette generator →