#04153F#04153F

#04153F is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.4% C 0.084 H 263.1°. Best body text is #FFFFFF at 17.73:1 contrast (WCAG AA passes).

Color values

HEX	#04153F
RGB	rgb(4, 21, 63)
HSL	hsl(223, 88%, 13%)
HSV	hsv(223, 94%, 25%)
CMYK	cmyk(93.7%, 66.7%, 0%, 75.3%)
CIE-LAB	lab(8.31, 12.11, -28.81)
CIE-LCH	lch(8.31, 31.25, 292.80°)
OKLab	oklab(21.4% -0.01 -0.0833)
OKLCH	oklch(21.4% 0.084 263.1)
XYZ	xyz(1.2151, 0.9209, 4.8154)
Luminance	0.0092 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04153F #3F2E04

analogous

#04323F #04153F #10043F

triadic

#04153F #3F0415 #153F04

tetradic

#04153F #3F0432 #3F2E04 #043F10

square

#04153F #3F0432 #3F2E04 #043F10

split-complementary

#04153F #3F1004 #323F04

monochromatic

#020A1D #020A1D #04153F #082879 #0B3BB2

Accessibility & contrast

On white

17.73

#04153F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#04153F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04153F

17.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04153F	#FFFFFF	#000000	##FFFFFF
##04153F	1.00	17.73	1.18	17.73
#FFFFFF	17.73	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B40

Deuteranopia (green-blind)

#00153E

Tritanopia (blue-blind)

#002027

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #04153f;
/* rgb */ color: rgb(4, 21, 63);
/* oklch */ color: oklch(21.4% 0.084 263.1);

Tailwind

colors: {
  custom: {
    50: '#505174',
    500: '#04153f',
    950: '#000000',
  },
}

SCSS

$custom: #04153f;
$custom-light: #505174;
$custom-dark: #000000;

JSON

{
  "hex": "#04153f",
  "rgb": {
    "r": 4,
    "g": 21,
    "b": 63
  },
  "hsl": {
    "h": 222.712,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.21398,
    "c": 0.08391,
    "h": 263.1
  },
  "luminance": 0.00921
}

Semantic roles & 50–950 ramp

primary

#04153F

secondary

#80641E

accent

#C12AFE

background

#F4F4F7

surface

#E7E7ED

border

#C3C3C8

text

#020208

muted

#78787B

Preview Lab

Preview with #04153F

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

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