#10123C#10123C

#10123C is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.2% C 0.079 H 275.2°. Best body text is #FFFFFF at 17.89:1 contrast (WCAG AA passes).

Color values

HEX	#10123C
RGB	rgb(16, 18, 60)
HSL	hsl(237, 58%, 15%)
HSV	hsv(237, 73%, 24%)
CMYK	cmyk(73.3%, 70%, 0%, 76.5%)
CIE-LAB	lab(7.85, 15.08, -27.39)
CIE-LCH	lch(7.85, 31.27, 298.83°)
OKLab	oklab(21.17% 0.0072 -0.0789)
OKLCH	oklch(21.17% 0.079 275.2)
XYZ	xyz(1.2453, 0.8689, 4.3762)
Luminance	0.0087 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10123C #3C3A10

analogous

#10283C #10123C #24103C

triadic

#10123C #3C1012 #123C10

tetradic

#10123C #3C1028 #3C3A10 #103C24

square

#10123C #3C1028 #3C3A10 #103C24

split-complementary

#10123C #3C2410 #283C10

monochromatic

#060718 #060718 #10123C #1D206C #2A2F9D

Accessibility & contrast

On white

17.89

#10123C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#10123C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10123C

17.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10123C	#FFFFFF	#000000	##FFFFFF
##10123C	1.00	17.89	1.17	17.89
#FFFFFF	17.89	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00193D

Deuteranopia (green-blind)

#00153B

Tritanopia (blue-blind)

#001C24

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #10123c;
/* rgb */ color: rgb(16, 18, 60);
/* oklch */ color: oklch(21.2% 0.079 275.2);

Tailwind

colors: {
  custom: {
    50: '#554f72',
    500: '#10123c',
    950: '#000000',
  },
}

SCSS

$custom: #10123c;
$custom-light: #554f72;
$custom-dark: #000000;

JSON

{
  "hex": "#10123c",
  "rgb": {
    "r": 16,
    "g": 18,
    "b": 60
  },
  "hsl": {
    "h": 237.273,
    "s": 57.895,
    "l": 14.902
  },
  "oklch": {
    "l": 0.21166,
    "c": 0.0792,
    "h": 275.2
  },
  "luminance": 0.00869
}

Semantic roles & 50–950 ramp

primary

#10123C

secondary

#767332

accent

#DA47E1

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030208

muted

#78787B

Preview Lab

Preview with #10123C

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

Preview Lab → · Contrast checker → · Palette generator →