#151D57#151D57

#151D57 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.6% C 0.104 H 271.3°. Best body text is #FFFFFF at 15.61:1 contrast (WCAG AA passes).

Color values

HEX	#151D57
RGB	rgb(21, 29, 87)
HSL	hsl(233, 61%, 21%)
HSV	hsv(233, 76%, 34%)
CMYK	cmyk(75.9%, 66.7%, 0%, 65.9%)
CIE-LAB	lab(13.98, 18.85, -36.13)
CIE-LCH	lch(13.98, 40.75, 297.55°)
OKLab	oklab(26.59% 0.0024 -0.1043)
OKLCH	oklch(26.59% 0.104 271.3)
XYZ	xyz(2.4683, 1.7260, 9.2181)
Luminance	0.0173 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151D57 #574F15

analogous

#153E57 #151D57 #2E1557

triadic

#151D57 #57151D #1D5715

tetradic

#151D57 #57153E #574F15 #15572E

square

#151D57 #57153E #574F15 #15572E

split-complementary

#151D57 #572E15 #3E5715

monochromatic

#060819 #090D26 #151D57 #212D88 #2D3EBA

Accessibility & contrast

On white

15.61

#151D57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#151D57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151D57

15.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151D57	#FFFFFF	#000000	##FFFFFF
##151D57	1.00	15.61	1.35	15.61
#FFFFFF	15.61	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002759

Deuteranopia (green-blind)

#002156

Tritanopia (blue-blind)

#002C36

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #151d57;
/* rgb */ color: rgb(21, 29, 87);
/* oklch */ color: oklch(26.6% 0.104 271.3);

Tailwind

colors: {
  custom: {
    50: '#5d5887',
    500: '#151d57',
    950: '#000000',
  },
}

SCSS

$custom: #151d57;
$custom-light: #5d5887;
$custom-dark: #000000;

JSON

{
  "hex": "#151d57",
  "rgb": {
    "r": 21,
    "g": 29,
    "b": 87
  },
  "hsl": {
    "h": 232.727,
    "s": 61.111,
    "l": 21.176
  },
  "oklch": {
    "l": 0.26588,
    "c": 0.10431,
    "h": 271.3
  },
  "luminance": 0.01726
}

Semantic roles & 50–950 ramp

primary

#151D57

secondary

#8F8439

accent

#D144E4

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #151D57

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

Preview Lab → · Contrast checker → · Palette generator →