#15377E#15377E

#15377E is a dark, vivid blue. Relative luminance 0.044; OKLCH L 35.9% C 0.127 H 262.6°. Best body text is #FFFFFF at 11.17:1 contrast (WCAG AA passes).

Color values

HEX	#15377E
RGB	rgb(21, 55, 126)
HSL	hsl(221, 71%, 29%)
HSV	hsv(221, 83%, 49%)
CMYK	cmyk(83.3%, 56.3%, 0%, 50.6%)
CIE-LAB	lab(24.94, 16.20, -43.66)
CIE-LCH	lch(24.94, 46.57, 290.37°)
OKLab	oklab(35.86% -0.0164 -0.1259)
OKLCH	oklch(35.86% 0.127 262.6)
XYZ	xyz(5.4400, 4.3975, 20.2967)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15377E #7E5C15

analogous

#156C7E #15377E #27157E

triadic

#15377E #7E1537 #377E15

tetradic

#15377E #7E156C #7E5C15 #157E27

square

#15377E #7E156C #7E5C15 #157E27

split-complementary

#15377E #7E2715 #6C7E15

monochromatic

#040B1A #0C204A #15377E #1E4EB2 #3168DD

Accessibility & contrast

On white

11.17

#15377E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#15377E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15377E

11.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15377E	#FFFFFF	#000000	##FFFFFF
##15377E	1.00	11.17	1.88	11.17
#FFFFFF	11.17	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004080

Deuteranopia (green-blind)

#00377D

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #15377e;
/* rgb */ color: rgb(21, 55, 126);
/* oklch */ color: oklch(35.9% 0.127 262.6);

Tailwind

colors: {
  custom: {
    50: '#666da4',
    500: '#15377e',
    950: '#000000',
  },
}

SCSS

$custom: #15377e;
$custom-light: #666da4;
$custom-dark: #000000;

JSON

{
  "hex": "#15377e",
  "rgb": {
    "r": 21,
    "g": 55,
    "b": 126
  },
  "hsl": {
    "h": 220.571,
    "s": 71.429,
    "l": 28.824
  },
  "oklch": {
    "l": 0.35863,
    "c": 0.12701,
    "h": 262.6
  },
  "luminance": 0.04398
}

Semantic roles & 50–950 ramp

primary

#15377E

secondary

#B38C3C

accent

#B43AEE

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #15377E

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

Preview Lab → · Contrast checker → · Palette generator →