#15377B#15377B

#15377B is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.6% C 0.123 H 262.2°. Best body text is #FFFFFF at 11.26:1 contrast (WCAG AA passes).

Color values

HEX	#15377B
RGB	rgb(21, 55, 123)
HSL	hsl(220, 71%, 28%)
HSV	hsv(220, 83%, 48%)
CMYK	cmyk(82.9%, 55.3%, 0%, 51.8%)
CIE-LAB	lab(24.71, 14.95, -42.15)
CIE-LCH	lch(24.71, 44.72, 289.53°)
OKLab	oklab(35.61% -0.0167 -0.1215)
OKLCH	oklch(35.61% 0.123 262.2)
XYZ	xyz(5.2493, 4.3212, 19.2925)
Luminance	0.0432 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15377B #7B5915

analogous

#156A7B #15377B #26157B

triadic

#15377B #7B1537 #377B15

tetradic

#15377B #7B156A #7B5915 #157B26

square

#15377B #7B156A #7B5915 #157B26

split-complementary

#15377B #7B2615 #6A7B15

monochromatic

#040C1A #0C2047 #15377B #1E4EAF #2F68DB

Accessibility & contrast

On white

11.26

#15377B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#15377B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15377B

11.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15377B	#FFFFFF	#000000	##FFFFFF
##15377B	1.00	11.26	1.86	11.26
#FFFFFF	11.26	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#03407D

Deuteranopia (green-blind)

#00367A

Tritanopia (blue-blind)

#004853

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #15377b;
/* rgb */ color: rgb(21, 55, 123);
/* oklch */ color: oklch(35.6% 0.123 262.2);

Tailwind

colors: {
  custom: {
    50: '#656da2',
    500: '#15377b',
    950: '#000000',
  },
}

SCSS

$custom: #15377b;
$custom-light: #656da2;
$custom-dark: #000000;

JSON

{
  "hex": "#15377b",
  "rgb": {
    "r": 21,
    "g": 55,
    "b": 123
  },
  "hsl": {
    "h": 220,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.35608,
    "c": 0.12266,
    "h": 262.2
  },
  "luminance": 0.04322
}

Semantic roles & 50–950 ramp

primary

#15377B

secondary

#B0893B

accent

#B23AEE

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #15377B

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

Preview Lab → · Contrast checker → · Palette generator →