#102A5B#102A5B

#102A5B is a dark, moderate blue. Relative luminance 0.025; OKLCH L 29.7% C 0.094 H 261.6°. Best body text is #FFFFFF at 13.96:1 contrast (WCAG AA passes).

Color values

HEX	#102A5B
RGB	rgb(16, 42, 91)
HSL	hsl(219, 70%, 21%)
HSV	hsv(219, 82%, 36%)
CMYK	cmyk(82.4%, 53.8%, 0%, 64.3%)
CIE-LAB	lab(18.01, 10.15, -32.27)
CIE-LCH	lch(18.01, 33.83, 287.46°)
OKLab	oklab(29.66% -0.0137 -0.0928)
OKLCH	oklch(29.66% 0.094 261.6)
XYZ	xyz(2.9293, 2.5211, 10.2277)
Luminance	0.0252 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#102A5B #5B4110

analogous

#104F5B #102A5B #1B105B

triadic

#102A5B #5B102A #2A5B10

tetradic

#102A5B #5B104F #5B4110 #105B1B

square

#102A5B #5B104F #5B4110 #105B1B

split-complementary

#102A5B #5B1B10 #4F5B10

monochromatic

#050C1A #071227 #102A5B #19428F #225AC3

Accessibility & contrast

On white

13.96

#102A5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#102A5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #102A5B

13.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##102A5B	#FFFFFF	#000000	##FFFFFF
##102A5B	1.00	13.96	1.50	13.96
#FFFFFF	13.96	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	13.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C305D

Deuteranopia (green-blind)

#00295A

Tritanopia (blue-blind)

#00363E

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #102a5b;
/* rgb */ color: rgb(16, 42, 91);
/* oklch */ color: oklch(29.7% 0.094 261.6);

Tailwind

colors: {
  custom: {
    50: '#5b638a',
    500: '#102a5b',
    950: '#000000',
  },
}

SCSS

$custom: #102a5b;
$custom-light: #5b638a;
$custom-dark: #000000;

JSON

{
  "hex": "#102a5b",
  "rgb": {
    "r": 16,
    "g": 42,
    "b": 91
  },
  "hsl": {
    "h": 219.2,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.29662,
    "c": 0.09382,
    "h": 261.6
  },
  "luminance": 0.02521
}

Semantic roles & 50–950 ramp

primary

#102A5B

secondary

#947233

accent

#AF3BED

background

#F5F5F8

surface

#E9EAF0

border

#C5C6CB

text

#04050C

muted

#79797D

Preview Lab

Preview with #102A5B

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

Preview Lab → · Contrast checker → · Palette generator →