#10198D#10198D

#10198D is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.9% C 0.183 H 267.5°. Best body text is #FFFFFF at 13.59:1 contrast (WCAG AA passes).

Color values

HEX	#10198D
RGB	rgb(16, 25, 141)
HSL	hsl(236, 80%, 31%)
HSV	hsv(236, 89%, 55%)
CMYK	cmyk(88.7%, 82.3%, 0%, 44.7%)
CIE-LAB	lab(18.92, 41.31, -62.97)
CIE-LCH	lch(18.92, 75.32, 303.27°)
OKLab	oklab(31.87% -0.008 -0.1825)
OKLCH	oklch(31.87% 0.183 267.5)
XYZ	xyz(5.3674, 2.7278, 25.4378)
Luminance	0.0273 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10198D #8D8410

analogous

#10578D #10198D #45108D

triadic

#10198D #8D1019 #198D10

tetradic

#10198D #8D1057 #8D8410 #108D45

square

#10198D #8D1057 #8D8410 #108D45

split-complementary

#10198D #8D4510 #578D10

monochromatic

#04061F #0A0F56 #10198D #1623C4 #303DE7

Accessibility & contrast

On white

13.59

#10198D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#10198D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10198D

13.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10198D	#FFFFFF	#000000	##FFFFFF
##10198D	1.00	13.59	1.55	13.59
#FFFFFF	13.59	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003490

Deuteranopia (green-blind)

#00278B

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #10198d;
/* rgb */ color: rgb(16, 25, 141);
/* oklch */ color: oklch(31.9% 0.183 267.5);

Tailwind

colors: {
  custom: {
    50: '#6c58b0',
    500: '#10198d',
    950: '#000000',
  },
}

SCSS

$custom: #10198d;
$custom-light: #6c58b0;
$custom-dark: #000000;

JSON

{
  "hex": "#10198d",
  "rgb": {
    "r": 16,
    "g": 25,
    "b": 141
  },
  "hsl": {
    "h": 235.68,
    "s": 79.618,
    "l": 30.784
  },
  "oklch": {
    "l": 0.31867,
    "c": 0.18265,
    "h": 267.5
  },
  "luminance": 0.02729
}

Semantic roles & 50–950 ramp

primary

#10198D

secondary

#C2B837

accent

#E832F6

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#080311

muted

#7B7880

Preview Lab

Preview with #10198D

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

Preview Lab → · Contrast checker → · Palette generator →