#151F4F#151F4F

#151F4F is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.3% C 0.089 H 270.3°. Best body text is #FFFFFF at 15.66:1 contrast (WCAG AA passes).

Color values

HEX	#151F4F
RGB	rgb(21, 31, 79)
HSL	hsl(230, 58%, 20%)
HSV	hsv(230, 73%, 31%)
CMYK	cmyk(73.4%, 60.8%, 0%, 69%)
CIE-LAB	lab(13.85, 14.05, -30.91)
CIE-LCH	lch(13.85, 33.96, 294.45°)
OKLab	oklab(26.27% 0.0004 -0.0889)
OKLCH	oklch(26.27% 0.089 270.3)
XYZ	xyz(2.2101, 1.7037, 7.6080)
Luminance	0.0170 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151F4F #4F4515

analogous

#153C4F #151F4F #28154F

triadic

#151F4F #4F151F #1F4F15

tetradic

#151F4F #4F153C #4F4515 #154F28

square

#151F4F #4F153C #4F4515 #154F28

split-complementary

#151F4F #4F2815 #3C4F15

monochromatic

#060918 #080C1F #151F4F #22327F #2F45B0

Accessibility & contrast

On white

15.66

#151F4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#151F4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151F4F

15.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151F4F	#FFFFFF	#000000	##FFFFFF
##151F4F	1.00	15.66	1.34	15.66
#FFFFFF	15.66	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002651

Deuteranopia (green-blind)

#00214E

Tritanopia (blue-blind)

#002B33

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #151f4f;
/* rgb */ color: rgb(21, 31, 79);
/* oklch */ color: oklch(26.3% 0.089 270.3);

Tailwind

colors: {
  custom: {
    50: '#5b5a81',
    500: '#151f4f',
    950: '#000000',
  },
}

SCSS

$custom: #151f4f;
$custom-light: #5b5a81;
$custom-dark: #000000;

JSON

{
  "hex": "#151f4f",
  "rgb": {
    "r": 21,
    "g": 31,
    "b": 79
  },
  "hsl": {
    "h": 229.655,
    "s": 58,
    "l": 19.608
  },
  "oklch": {
    "l": 0.26266,
    "c": 0.08891,
    "h": 270.3
  },
  "luminance": 0.01704
}

Semantic roles & 50–950 ramp

primary

#151F4F

secondary

#877939

accent

#C747E1

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #151F4F

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

Preview Lab → · Contrast checker → · Palette generator →