#102B5B#102B5B

#102B5B is a dark, moderate blue. Relative luminance 0.026; OKLCH L 29.9% C 0.092 H 260.9°. Best body text is #FFFFFF at 13.83:1 contrast (WCAG AA passes).

Color values

HEX	#102B5B
RGB	rgb(16, 43, 91)
HSL	hsl(218, 70%, 21%)
HSV	hsv(218, 82%, 36%)
CMYK	cmyk(82.4%, 52.7%, 0%, 64.3%)
CIE-LAB	lab(18.33, 9.41, -31.75)
CIE-LCH	lch(18.33, 33.12, 286.51°)
OKLab	oklab(29.91% -0.0146 -0.0913)
OKLCH	oklch(29.91% 0.092 260.9)
XYZ	xyz(2.9652, 2.5929, 10.2397)
Luminance	0.0259 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#102B5B #5B4010

analogous

#10505B #102B5B #1A105B

triadic

#102B5B #5B102B #2B5B10

tetradic

#102B5B #5B1050 #5B4010 #105B1A

square

#102B5B #5B1050 #5B4010 #105B1A

split-complementary

#102B5B #5B1A10 #505B10

monochromatic

#050C1A #071227 #102B5B #19448F #225CC3

Accessibility & contrast

On white

13.83

#102B5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#102B5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #102B5B

13.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##102B5B	#FFFFFF	#000000	##FFFFFF
##102B5B	1.00	13.83	1.52	13.83
#FFFFFF	13.83	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F305D

Deuteranopia (green-blind)

#00295A

Tritanopia (blue-blind)

#00363E

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #102b5b;
/* rgb */ color: rgb(16, 43, 91);
/* oklch */ color: oklch(29.9% 0.092 260.9);

Tailwind

colors: {
  custom: {
    50: '#5b638a',
    500: '#102b5b',
    950: '#000000',
  },
}

SCSS

$custom: #102b5b;
$custom-light: #5b638a;
$custom-dark: #000000;

JSON

{
  "hex": "#102b5b",
  "rgb": {
    "r": 16,
    "g": 43,
    "b": 91
  },
  "hsl": {
    "h": 218.4,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.29907,
    "c": 0.09244,
    "h": 260.9
  },
  "luminance": 0.02593
}

Semantic roles & 50–950 ramp

primary

#102B5B

secondary

#947133

accent

#AD3BED

background

#F5F5F8

surface

#E9EAF0

border

#C5C6CB

text

#04050C

muted

#79797D

Preview Lab

Preview with #102B5B

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

Preview Lab → · Contrast checker → · Palette generator →