#15377F#15377F

#15377F is a dark, vivid blue. Relative luminance 0.044; OKLCH L 35.9% C 0.128 H 262.7°. Best body text is #FFFFFF at 11.14:1 contrast (WCAG AA passes).

Color values

HEX	#15377F
RGB	rgb(21, 55, 127)
HSL	hsl(221, 72%, 29%)
HSV	hsv(221, 83%, 50%)
CMYK	cmyk(83.5%, 56.7%, 0%, 50.2%)
CIE-LAB	lab(25.02, 16.62, -44.15)
CIE-LCH	lch(25.02, 47.18, 290.63°)
OKLab	oklab(35.95% -0.0163 -0.1274)
OKLCH	oklch(35.95% 0.128 262.7)
XYZ	xyz(5.5048, 4.4235, 20.6382)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15377F #7F5D15

analogous

#156C7F #15377F #28157F

triadic

#15377F #7F1537 #377F15

tetradic

#15377F #7F156C #7F5D15 #157F28

square

#15377F #7F156C #7F5D15 #157F28

split-complementary

#15377F #7F2815 #6C7F15

monochromatic

#040B1A #0C204A #15377F #1E4EB4 #3168DD

Accessibility & contrast

On white

11.14

#15377F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#15377F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15377F

11.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15377F	#FFFFFF	#000000	##FFFFFF
##15377F	1.00	11.14	1.88	11.14
#FFFFFF	11.14	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004082

Deuteranopia (green-blind)

#00377E

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #15377f;
/* rgb */ color: rgb(21, 55, 127);
/* oklch */ color: oklch(35.9% 0.128 262.7);

Tailwind

colors: {
  custom: {
    50: '#666da5',
    500: '#15377f',
    950: '#000000',
  },
}

SCSS

$custom: #15377f;
$custom-light: #666da5;
$custom-dark: #000000;

JSON

{
  "hex": "#15377f",
  "rgb": {
    "r": 21,
    "g": 55,
    "b": 127
  },
  "hsl": {
    "h": 220.755,
    "s": 71.622,
    "l": 29.02
  },
  "oklch": {
    "l": 0.3595,
    "c": 0.12846,
    "h": 262.7
  },
  "luminance": 0.04424
}

Semantic roles & 50–950 ramp

primary

#15377F

secondary

#B48D3C

accent

#B439EE

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #15377F

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

Preview Lab → · Contrast checker → · Palette generator →