#102F5B#102F5B

#102F5B is a dark, moderate blue. Relative luminance 0.029; OKLCH L 30.9% C 0.087 H 257.8°. Best body text is #FFFFFF at 13.29:1 contrast (WCAG AA passes).

Color values

HEX	#102F5B
RGB	rgb(16, 47, 91)
HSL	hsl(215, 70%, 21%)
HSV	hsv(215, 82%, 36%)
CMYK	cmyk(82.4%, 48.4%, 0%, 64.3%)
CIE-LAB	lab(19.63, 6.47, -29.67)
CIE-LCH	lch(19.63, 30.37, 282.31°)
OKLab	oklab(30.91% -0.0184 -0.085)
OKLCH	oklch(30.91% 0.087 257.8)
XYZ	xyz(3.1178, 2.8982, 10.2906)
Luminance	0.0290 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#102F5B #5B3C10

analogous

#10545B #102F5B #16105B

triadic

#102F5B #5B102F #2F5B10

tetradic

#102F5B #5B1054 #5B3C10 #105B16

square

#102F5B #5B1054 #5B3C10 #105B16

split-complementary

#102F5B #5B1610 #545B10

monochromatic

#050D1A #071427 #102F5B #194A8F #2265C3

Accessibility & contrast

On white

13.29

#102F5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#102F5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #102F5B

13.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##102F5B	#FFFFFF	#000000	##FFFFFF
##102F5B	1.00	13.29	1.58	13.29
#FFFFFF	13.29	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18335D

Deuteranopia (green-blind)

#082C5A

Tritanopia (blue-blind)

#003940

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #102f5b;
/* rgb */ color: rgb(16, 47, 91);
/* oklch */ color: oklch(30.9% 0.087 257.8);

Tailwind

colors: {
  custom: {
    50: '#5b678a',
    500: '#102f5b',
    950: '#000000',
  },
}

SCSS

$custom: #102f5b;
$custom-light: #5b678a;
$custom-dark: #000000;

JSON

{
  "hex": "#102f5b",
  "rgb": {
    "r": 16,
    "g": 47,
    "b": 91
  },
  "hsl": {
    "h": 215.2,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.30906,
    "c": 0.08701,
    "h": 257.8
  },
  "luminance": 0.02899
}

Semantic roles & 50–950 ramp

primary

#102F5B

secondary

#946C33

accent

#A33BED

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#04060B

muted

#797A7C

Preview Lab

Preview with #102F5B

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

Preview Lab → · Contrast checker → · Palette generator →