#10103B#10103B

#10103B is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.6% C 0.081 H 276.7°. Best body text is #FFFFFF at 18.11:1 contrast (WCAG AA passes).

Color values

HEX	#10103B
RGB	rgb(16, 16, 59)
HSL	hsl(240, 57%, 15%)
HSV	hsv(240, 73%, 23%)
CMYK	cmyk(72.9%, 72.9%, 0%, 76.9%)
CIE-LAB	lab(7.19, 16.07, -27.74)
CIE-LCH	lch(7.19, 32.05, 300.08°)
OKLab	oklab(20.63% 0.0094 -0.08)
OKLCH	oklch(20.63% 0.081 276.7)
XYZ	xyz(1.1881, 0.7964, 4.2279)
Luminance	0.0080 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Dark Navy

#000435

ΔE00 3.28

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10103B #3B3B10

analogous

#10263B #10103B #26103B

triadic

#10103B #3B1010 #103B10

tetradic

#10103B #3B1026 #3B3B10 #103B26

square

#10103B #3B1026 #3B3B10 #103B26

split-complementary

#10103B #3B2610 #263B10

monochromatic

#070718 #070718 #10103B #1D1D6B #2A2A9B

Accessibility & contrast

On white

18.11

#10103B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#10103B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10103B

18.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10103B	#FFFFFF	#000000	##FFFFFF
##10103B	1.00	18.11	1.16	18.11
#FFFFFF	18.11	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00183C

Deuteranopia (green-blind)

#00143A

Tritanopia (blue-blind)

#001B23

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #10103b;
/* rgb */ color: rgb(16, 16, 59);
/* oklch */ color: oklch(20.6% 0.081 276.7);

Tailwind

colors: {
  custom: {
    50: '#544e71',
    500: '#10103b',
    950: '#000000',
  },
}

SCSS

$custom: #10103b;
$custom-light: #544e71;
$custom-dark: #000000;

JSON

{
  "hex": "#10103b",
  "rgb": {
    "r": 16,
    "g": 16,
    "b": 59
  },
  "hsl": {
    "h": 240,
    "s": 57.333,
    "l": 14.706
  },
  "oklch": {
    "l": 0.20634,
    "c": 0.0806,
    "h": 276.7
  },
  "luminance": 0.00797
}

Semantic roles & 50–950 ramp

primary

#10103B

secondary

#757532

accent

#E147E1

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030108

muted

#78777B

Preview Lab

Preview with #10103B

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

Preview Lab → · Contrast checker → · Palette generator →