#10153B#10153B

#10153B is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 21.7% C 0.073 H 273.1°. Best body text is #FFFFFF at 17.61:1 contrast (WCAG AA passes).

Color values

HEX	#10153B
RGB	rgb(16, 21, 59)
HSL	hsl(233, 57%, 15%)
HSV	hsv(233, 73%, 23%)
CMYK	cmyk(72.9%, 64.4%, 0%, 76.9%)
CIE-LAB	lab(8.67, 12.34, -25.34)
CIE-LCH	lch(8.67, 28.18, 295.96°)
OKLab	oklab(21.75% 0.004 -0.0728)
OKLCH	oklch(21.75% 0.073 273.1)
XYZ	xyz(1.2710, 0.9621, 4.2556)
Luminance	0.0096 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10153B #3B3610

analogous

#102B3B #10153B #21103B

triadic

#10153B #3B1015 #153B10

tetradic

#10153B #3B102B #3B3610 #103B21

square

#10153B #3B102B #3B3610 #103B21

split-complementary

#10153B #3B2110 #2B3B10

monochromatic

#070918 #070918 #10153B #1D266B #2A379B

Accessibility & contrast

On white

17.61

#10153B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#10153B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10153B

17.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10153B	#FFFFFF	#000000	##FFFFFF
##10153B	1.00	17.61	1.19	17.61
#FFFFFF	17.61	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B3C

Deuteranopia (green-blind)

#00173A

Tritanopia (blue-blind)

#001E25

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #10153b;
/* rgb */ color: rgb(16, 21, 59);
/* oklch */ color: oklch(21.7% 0.073 273.1);

Tailwind

colors: {
  custom: {
    50: '#545271',
    500: '#10153b',
    950: '#000000',
  },
}

SCSS

$custom: #10153b;
$custom-light: #545271;
$custom-dark: #000000;

JSON

{
  "hex": "#10153b",
  "rgb": {
    "r": 16,
    "g": 21,
    "b": 59
  },
  "hsl": {
    "h": 233.023,
    "s": 57.333,
    "l": 14.706
  },
  "oklch": {
    "l": 0.21749,
    "c": 0.0729,
    "h": 273.1
  },
  "luminance": 0.00962
}

Semantic roles & 50–950 ramp

primary

#10153B

secondary

#756D32

accent

#CF47E1

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030208

muted

#78787B

Preview Lab

Preview with #10153B

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

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