#10238D#10238D

#10238D is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.3% C 0.173 H 266.7°. Best body text is #FFFFFF at 12.75:1 contrast (WCAG AA passes).

Color values

HEX	#10238D
RGB	rgb(16, 35, 141)
HSL	hsl(231, 80%, 31%)
HSV	hsv(231, 89%, 55%)
CMYK	cmyk(88.7%, 75.2%, 0%, 44.7%)
CIE-LAB	lab(20.96, 35.49, -59.59)
CIE-LCH	lch(20.96, 69.36, 300.78°)
OKLab	oklab(33.31% -0.0101 -0.1728)
OKLCH	oklch(33.31% 0.173 266.7)
XYZ	xyz(5.6208, 3.2346, 25.5222)
Luminance	0.0323 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10238D #8D7A10

analogous

#10618D #10238D #3B108D

triadic

#10238D #8D1023 #238D10

tetradic

#10238D #8D1061 #8D7A10 #108D3B

square

#10238D #8D1061 #8D7A10 #108D3B

split-complementary

#10238D #8D3B10 #618D10

monochromatic

#04081F #0A1556 #10238D #1631C4 #304CE7

Accessibility & contrast

On white

12.75

#10238D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#10238D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10238D

12.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10238D	#FFFFFF	#000000	##FFFFFF
##10238D	1.00	12.75	1.65	12.75
#FFFFFF	12.75	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003990

Deuteranopia (green-blind)

#002C8B

Tritanopia (blue-blind)

#004256

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #10238d;
/* rgb */ color: rgb(16, 35, 141);
/* oklch */ color: oklch(33.3% 0.173 266.7);

Tailwind

colors: {
  custom: {
    50: '#6b5eb0',
    500: '#10238d',
    950: '#000000',
  },
}

SCSS

$custom: #10238d;
$custom-light: #6b5eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#10238d",
  "rgb": {
    "r": 16,
    "g": 35,
    "b": 141
  },
  "hsl": {
    "h": 230.88,
    "s": 79.618,
    "l": 30.784
  },
  "oklch": {
    "l": 0.33313,
    "c": 0.1731,
    "h": 266.7
  },
  "luminance": 0.03235
}

Semantic roles & 50–950 ramp

primary

#10238D

secondary

#C2AD37

accent

#D832F6

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080411

muted

#7B7980

Preview Lab

Preview with #10238D

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

Preview Lab → · Contrast checker → · Palette generator →