#151F5B#151F5B

#151F5B is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.4% C 0.108 H 270.3°. Best body text is #FFFFFF at 15.23:1 contrast (WCAG AA passes).

Color values

HEX	#151F5B
RGB	rgb(21, 31, 91)
HSL	hsl(231, 63%, 22%)
HSV	hsv(231, 77%, 36%)
CMYK	cmyk(76.9%, 65.9%, 0%, 64.3%)
CIE-LAB	lab(14.92, 19.02, -37.28)
CIE-LCH	lch(14.92, 41.85, 297.04°)
OKLab	oklab(27.4% 0.0006 -0.1076)
OKLCH	oklch(27.4% 0.108 270.3)
XYZ	xyz(2.6869, 1.8945, 10.1196)
Luminance	0.0190 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151F5B #5B5115

analogous

#15425B #151F5B #2E155B

triadic

#151F5B #5B151F #1F5B15

tetradic

#151F5B #5B1542 #5B5115 #155B2E

square

#151F5B #5B1542 #5B5115 #155B2E

split-complementary

#151F5B #5B2E15 #425B15

monochromatic

#060819 #0A0E29 #151F5B #20308D #2C41BE

Accessibility & contrast

On white

15.23

#151F5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#151F5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151F5B

15.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151F5B	#FFFFFF	#000000	##FFFFFF
##151F5B	1.00	15.23	1.38	15.23
#FFFFFF	15.23	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00295D

Deuteranopia (green-blind)

#00225A

Tritanopia (blue-blind)

#002E39

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #151f5b;
/* rgb */ color: rgb(21, 31, 91);
/* oklch */ color: oklch(27.4% 0.108 270.3);

Tailwind

colors: {
  custom: {
    50: '#5e5a8a',
    500: '#151f5b',
    950: '#000000',
  },
}

SCSS

$custom: #151f5b;
$custom-light: #5e5a8a;
$custom-dark: #000000;

JSON

{
  "hex": "#151f5b",
  "rgb": {
    "r": 21,
    "g": 31,
    "b": 91
  },
  "hsl": {
    "h": 231.429,
    "s": 62.5,
    "l": 21.961
  },
  "oklch": {
    "l": 0.27404,
    "c": 0.10762,
    "h": 270.3
  },
  "luminance": 0.01895
}

Semantic roles & 50–950 ramp

primary

#151F5B

secondary

#928639

accent

#CE42E6

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #151F5B

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

Preview Lab → · Contrast checker → · Palette generator →