#15377D#15377D

#15377D is a dark, vivid blue. Relative luminance 0.044; OKLCH L 35.8% C 0.126 H 262.5°. Best body text is #FFFFFF at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#15377D
RGB	rgb(21, 55, 125)
HSL	hsl(220, 71%, 29%)
HSV	hsv(220, 83%, 49%)
CMYK	cmyk(83.2%, 56%, 0%, 51%)
CIE-LAB	lab(24.86, 15.79, -43.16)
CIE-LCH	lch(24.86, 45.95, 290.10°)
OKLab	oklab(35.78% -0.0165 -0.1245)
OKLCH	oklch(35.78% 0.126 262.5)
XYZ	xyz(5.3758, 4.3718, 19.9586)
Luminance	0.0437 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15377D #7D5B15

analogous

#156B7D #15377D #27157D

triadic

#15377D #7D1537 #377D15

tetradic

#15377D #7D156B #7D5B15 #157D27

square

#15377D #7D156B #7D5B15 #157D27

split-complementary

#15377D #7D2715 #6B7D15

monochromatic

#040C1A #0C2049 #15377D #1E4EB1 #3068DC

Accessibility & contrast

On white

11.20

#15377D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#15377D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15377D

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15377D	#FFFFFF	#000000	##FFFFFF
##15377D	1.00	11.20	1.87	11.20
#FFFFFF	11.20	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00407F

Deuteranopia (green-blind)

#00367C

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #15377d;
/* rgb */ color: rgb(21, 55, 125);
/* oklch */ color: oklch(35.8% 0.126 262.5);

Tailwind

colors: {
  custom: {
    50: '#656da3',
    500: '#15377d',
    950: '#000000',
  },
}

SCSS

$custom: #15377d;
$custom-light: #656da3;
$custom-dark: #000000;

JSON

{
  "hex": "#15377d",
  "rgb": {
    "r": 21,
    "g": 55,
    "b": 125
  },
  "hsl": {
    "h": 220.385,
    "s": 71.233,
    "l": 28.627
  },
  "oklch": {
    "l": 0.35778,
    "c": 0.12557,
    "h": 262.5
  },
  "luminance": 0.04372
}

Semantic roles & 50–950 ramp

primary

#15377D

secondary

#B28B3C

accent

#B33AEE

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #15377D

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

Preview Lab → · Contrast checker → · Palette generator →