#151F3F#151F3F

#151F3F is a very dark, moderate blue. Relative luminance 0.015; OKLCH L 24.9% C 0.062 H 268.6°. Best body text is #FFFFFF at 16.16:1 contrast (WCAG AA passes).

Color values

HEX	#151F3F
RGB	rgb(21, 31, 63)
HSL	hsl(226, 50%, 16%)
HSV	hsv(226, 67%, 25%)
CMYK	cmyk(66.7%, 50.8%, 0%, 75.3%)
CIE-LAB	lab(12.60, 7.40, -21.84)
CIE-LCH	lch(12.60, 23.06, 288.72°)
OKLab	oklab(24.92% -0.0016 -0.0622)
OKLCH	oklch(24.92% 0.062 268.6)
XYZ	xyz(1.6961, 1.4981, 4.9015)
Luminance	0.0150 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151F3F #3F3515

analogous

#15343F #151F3F #20153F

triadic

#151F3F #3F151F #1F3F15

tetradic

#151F3F #3F1534 #3F3515 #153F20

square

#151F3F #3F1534 #3F3515 #153F20

split-complementary

#151F3F #3F2015 #343F15

monochromatic

#080B17 #080B17 #151F3F #24366D #344C9B

Accessibility & contrast

On white

16.16

#151F3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#151F3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151F3F

16.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151F3F	#FFFFFF	#000000	##FFFFFF
##151F3F	1.00	16.16	1.30	16.16
#FFFFFF	16.16	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#102340

Deuteranopia (green-blind)

#0B1F3E

Tritanopia (blue-blind)

#00262B

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #151f3f;
/* rgb */ color: rgb(21, 31, 63);
/* oklch */ color: oklch(24.9% 0.062 268.6);

Tailwind

colors: {
  custom: {
    50: '#575a74',
    500: '#151f3f',
    950: '#000000',
  },
}

SCSS

$custom: #151f3f;
$custom-light: #575a74;
$custom-dark: #000000;

JSON

{
  "hex": "#151f3f",
  "rgb": {
    "r": 21,
    "g": 31,
    "b": 63
  },
  "hsl": {
    "h": 225.714,
    "s": 50,
    "l": 16.471
  },
  "oklch": {
    "l": 0.24917,
    "c": 0.06226,
    "h": 268.6
  },
  "luminance": 0.01498
}

Semantic roles & 50–950 ramp

primary

#151F3F

secondary

#776839

accent

#B84EDA

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #151F3F

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

Preview Lab → · Contrast checker → · Palette generator →