#10123D#10123D

#10123D is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.3% C 0.081 H 275.1°. Best body text is #FFFFFF at 17.86:1 contrast (WCAG AA passes).

Color values

HEX	#10123D
RGB	rgb(16, 18, 61)
HSL	hsl(237, 58%, 15%)
HSV	hsv(237, 74%, 24%)
CMYK	cmyk(73.8%, 70.5%, 0%, 76.1%)
CIE-LAB	lab(7.95, 15.50, -27.95)
CIE-LCH	lch(7.95, 31.96, 299.01°)
OKLab	oklab(21.27% 0.0072 -0.0805)
OKLCH	oklch(21.27% 0.081 275.1)
XYZ	xyz(1.2720, 0.8796, 4.5167)
Luminance	0.0088 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10123D #3D3B10

analogous

#10293D #10123D #24103D

triadic

#10123D #3D1012 #123D10

tetradic

#10123D #3D1029 #3D3B10 #103D24

square

#10123D #3D1029 #3D3B10 #103D24

split-complementary

#10123D #3D2410 #293D10

monochromatic

#060718 #060718 #10123D #1D206D #292F9E

Accessibility & contrast

On white

17.86

#10123D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#10123D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10123D

17.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10123D	#FFFFFF	#000000	##FFFFFF
##10123D	1.00	17.86	1.18	17.86
#FFFFFF	17.86	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00193E

Deuteranopia (green-blind)

#00153C

Tritanopia (blue-blind)

#001D25

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #10123d;
/* rgb */ color: rgb(16, 18, 61);
/* oklch */ color: oklch(21.3% 0.081 275.1);

Tailwind

colors: {
  custom: {
    50: '#554f73',
    500: '#10123d',
    950: '#000000',
  },
}

SCSS

$custom: #10123d;
$custom-light: #554f73;
$custom-dark: #000000;

JSON

{
  "hex": "#10123d",
  "rgb": {
    "r": 16,
    "g": 18,
    "b": 61
  },
  "hsl": {
    "h": 237.333,
    "s": 58.442,
    "l": 15.098
  },
  "oklch": {
    "l": 0.21268,
    "c": 0.08083,
    "h": 275.1
  },
  "luminance": 0.0088
}

Semantic roles & 50–950 ramp

primary

#10123D

secondary

#777432

accent

#DB46E2

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #10123D

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

Preview Lab → · Contrast checker → · Palette generator →