#102D5B#102D5B

#102D5B is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.4% C 0.090 H 259.4°. Best body text is #FFFFFF at 13.56:1 contrast (WCAG AA passes).

Color values

HEX	#102D5B
RGB	rgb(16, 45, 91)
HSL	hsl(217, 70%, 21%)
HSV	hsv(217, 82%, 36%)
CMYK	cmyk(82.4%, 50.5%, 0%, 64.3%)
CIE-LAB	lab(18.98, 7.94, -30.72)
CIE-LCH	lch(18.98, 31.72, 284.49°)
OKLab	oklab(30.4% -0.0165 -0.0882)
OKLCH	oklch(30.4% 0.09 259.4)
XYZ	xyz(3.0397, 2.7419, 10.2645)
Luminance	0.0274 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#102D5B #5B3E10

analogous

#10525B #102D5B #18105B

triadic

#102D5B #5B102D #2D5B10

tetradic

#102D5B #5B1052 #5B3E10 #105B18

square

#102D5B #5B1052 #5B3E10 #105B18

split-complementary

#102D5B #5B1810 #525B10

monochromatic

#050D1A #071327 #102D5B #19478F #2260C3

Accessibility & contrast

On white

13.56

#102D5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#102D5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #102D5B

13.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##102D5B	#FFFFFF	#000000	##FFFFFF
##102D5B	1.00	13.56	1.55	13.56
#FFFFFF	13.56	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14325D

Deuteranopia (green-blind)

#022B5A

Tritanopia (blue-blind)

#00383F

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #102d5b;
/* rgb */ color: rgb(16, 45, 91);
/* oklch */ color: oklch(30.4% 0.090 259.4);

Tailwind

colors: {
  custom: {
    50: '#5b658a',
    500: '#102d5b',
    950: '#000000',
  },
}

SCSS

$custom: #102d5b;
$custom-light: #5b658a;
$custom-dark: #000000;

JSON

{
  "hex": "#102d5b",
  "rgb": {
    "r": 16,
    "g": 45,
    "b": 91
  },
  "hsl": {
    "h": 216.8,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.30403,
    "c": 0.0897,
    "h": 259.4
  },
  "luminance": 0.02742
}

Semantic roles & 50–950 ramp

primary

#102D5B

secondary

#946E33

accent

#A83BED

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#04050B

muted

#797A7C

Preview Lab

Preview with #102D5B

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

Preview Lab → · Contrast checker → · Palette generator →