#10123E#10123E

#10123E is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.4% C 0.082 H 275.0°. Best body text is #FFFFFF at 17.82:1 contrast (WCAG AA passes).

Color values

HEX	#10123E
RGB	rgb(16, 18, 62)
HSL	hsl(237, 59%, 15%)
HSV	hsv(237, 74%, 24%)
CMYK	cmyk(74.2%, 71%, 0%, 75.7%)
CIE-LAB	lab(8.04, 15.91, -28.50)
CIE-LCH	lch(8.04, 32.64, 299.17°)
OKLab	oklab(21.37% 0.0071 -0.0821)
OKLCH	oklch(21.37% 0.082 275)
XYZ	xyz(1.2992, 0.8905, 4.6599)
Luminance	0.0089 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10123E #3E3C10

analogous

#10293E #10123E #25103E

triadic

#10123E #3E1012 #123E10

tetradic

#10123E #3E1029 #3E3C10 #103E25

square

#10123E #3E1029 #3E3C10 #103E25

split-complementary

#10123E #3E2510 #293E10

monochromatic

#060718 #060718 #10123E #1D206F #292E9F

Accessibility & contrast

On white

17.82

#10123E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#10123E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10123E

17.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10123E	#FFFFFF	#000000	##FFFFFF
##10123E	1.00	17.82	1.18	17.82
#FFFFFF	17.82	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A3F

Deuteranopia (green-blind)

#00163D

Tritanopia (blue-blind)

#001D25

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #10123e;
/* rgb */ color: rgb(16, 18, 62);
/* oklch */ color: oklch(21.4% 0.082 275.0);

Tailwind

colors: {
  custom: {
    50: '#554f74',
    500: '#10123e',
    950: '#000000',
  },
}

SCSS

$custom: #10123e;
$custom-light: #554f74;
$custom-dark: #000000;

JSON

{
  "hex": "#10123e",
  "rgb": {
    "r": 16,
    "g": 18,
    "b": 62
  },
  "hsl": {
    "h": 237.391,
    "s": 58.974,
    "l": 15.294
  },
  "oklch": {
    "l": 0.21371,
    "c": 0.08245,
    "h": 275
  },
  "luminance": 0.00891
}

Semantic roles & 50–950 ramp

primary

#10123E

secondary

#787532

accent

#DB46E2

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #10123E

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

Preview Lab → · Contrast checker → · Palette generator →