#15307E#15307E

#15307E is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.3% C 0.136 H 265.1°. Best body text is #FFFFFF at 11.96:1 contrast (WCAG AA passes).

Color values

HEX	#15307E
RGB	rgb(21, 48, 126)
HSL	hsl(225, 71%, 29%)
HSV	hsv(225, 83%, 49%)
CMYK	cmyk(83.3%, 61.9%, 0%, 50.6%)
CIE-LAB	lab(22.93, 21.18, -46.94)
CIE-LCH	lch(22.93, 51.49, 294.28°)
OKLab	oklab(34.35% -0.0115 -0.1357)
OKLCH	oklch(34.35% 0.136 265.1)
XYZ	xyz(5.1308, 3.7791, 20.1936)
Luminance	0.0378 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15307E #7E6315

analogous

#15657E #15307E #2E157E

triadic

#15307E #7E1530 #307E15

tetradic

#15307E #7E1565 #7E6315 #157E2E

square

#15307E #7E1565 #7E6315 #157E2E

split-complementary

#15307E #7E2E15 #657E15

monochromatic

#040A1A #0C1C4A #15307E #1E44B2 #315DDD

Accessibility & contrast

On white

11.96

#15307E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#15307E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15307E

11.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15307E	#FFFFFF	#000000	##FFFFFF
##15307E	1.00	11.96	1.76	11.96
#FFFFFF	11.96	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C81

Deuteranopia (green-blind)

#00327D

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #15307e;
/* rgb */ color: rgb(21, 48, 126);
/* oklch */ color: oklch(34.3% 0.136 265.1);

Tailwind

colors: {
  custom: {
    50: '#6667a4',
    500: '#15307e',
    950: '#000000',
  },
}

SCSS

$custom: #15307e;
$custom-light: #6667a4;
$custom-dark: #000000;

JSON

{
  "hex": "#15307e",
  "rgb": {
    "r": 21,
    "g": 48,
    "b": 126
  },
  "hsl": {
    "h": 224.571,
    "s": 71.429,
    "l": 28.824
  },
  "oklch": {
    "l": 0.34346,
    "c": 0.13621,
    "h": 265.1
  },
  "luminance": 0.0378
}

Semantic roles & 50–950 ramp

primary

#15307E

secondary

#B3943C

accent

#C03AEE

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #15307E

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

Preview Lab → · Contrast checker → · Palette generator →