#101A8D#101A8D

#101A8D is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.0% C 0.182 H 267.4°. Best body text is #FFFFFF at 13.51:1 contrast (WCAG AA passes).

Color values

HEX	#101A8D
RGB	rgb(16, 26, 141)
HSL	hsl(235, 80%, 31%)
HSV	hsv(235, 89%, 55%)
CMYK	cmyk(88.7%, 81.6%, 0%, 44.7%)
CIE-LAB	lab(19.10, 40.78, -62.67)
CIE-LCH	lch(19.10, 74.76, 303.05°)
OKLab	oklab(32% -0.0082 -0.1816)
OKLCH	oklch(32% 0.182 267.4)
XYZ	xyz(5.3891, 2.7714, 25.4450)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101A8D #8D8310

analogous

#10588D #101A8D #44108D

triadic

#101A8D #8D101A #1A8D10

tetradic

#101A8D #8D1058 #8D8310 #108D44

square

#101A8D #8D1058 #8D8310 #108D44

split-complementary

#101A8D #8D4410 #588D10

monochromatic

#04061F #0A1056 #101A8D #1624C4 #303FE7

Accessibility & contrast

On white

13.51

#101A8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#101A8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101A8D

13.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101A8D	#FFFFFF	#000000	##FFFFFF
##101A8D	1.00	13.51	1.55	13.51
#FFFFFF	13.51	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003590

Deuteranopia (green-blind)

#00288B

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #101a8d;
/* rgb */ color: rgb(16, 26, 141);
/* oklch */ color: oklch(32.0% 0.182 267.4);

Tailwind

colors: {
  custom: {
    50: '#6c59b0',
    500: '#101a8d',
    950: '#000000',
  },
}

SCSS

$custom: #101a8d;
$custom-light: #6c59b0;
$custom-dark: #000000;

JSON

{
  "hex": "#101a8d",
  "rgb": {
    "r": 16,
    "g": 26,
    "b": 141
  },
  "hsl": {
    "h": 235.2,
    "s": 79.618,
    "l": 30.784
  },
  "oklch": {
    "l": 0.31997,
    "c": 0.18178,
    "h": 267.4
  },
  "luminance": 0.02772
}

Semantic roles & 50–950 ramp

primary

#101A8D

secondary

#C2B737

accent

#E632F6

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#080411

muted

#7B7980

Preview Lab

Preview with #101A8D

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

Preview Lab → · Contrast checker → · Palette generator →