#10284D#10284D

#10284D is a dark, moderate blue. Relative luminance 0.022; OKLCH L 28.0% C 0.075 H 258.9°. Best body text is #FFFFFF at 14.66:1 contrast (WCAG AA passes).

Color values

HEX	#10284D
RGB	rgb(16, 40, 77)
HSL	hsl(216, 66%, 18%)
HSV	hsv(216, 79%, 30%)
CMYK	cmyk(79.2%, 48.1%, 0%, 69.8%)
CIE-LAB	lab(16.32, 5.54, -25.58)
CIE-LCH	lch(16.32, 26.17, 282.23°)
OKLab	oklab(28.03% -0.0144 -0.0732)
OKLCH	oklch(28.03% 0.075 258.9)
XYZ	xyz(2.3115, 2.1633, 7.3155)
Luminance	0.0216 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10284D #4D3510

analogous

#10464D #10284D #16104D

triadic

#10284D #4D1028 #284D10

tetradic

#10284D #4D1046 #4D3510 #104D16

square

#10284D #4D1046 #4D3510 #104D16

split-complementary

#10284D #4D1610 #464D10

monochromatic

#050D19 #050E1A #10284D #1B4280 #255DB2

Accessibility & contrast

On white

14.66

#10284D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#10284D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10284D

14.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10284D	#FFFFFF	#000000	##FFFFFF
##10284D	1.00	14.66	1.43	14.66
#FFFFFF	14.66	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#162B4E

Deuteranopia (green-blind)

#0B264C

Tritanopia (blue-blind)

#003136

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #10284d;
/* rgb */ color: rgb(16, 40, 77);
/* oklch */ color: oklch(28.0% 0.075 258.9);

Tailwind

colors: {
  custom: {
    50: '#58617f',
    500: '#10284d',
    950: '#000000',
  },
}

SCSS

$custom: #10284d;
$custom-light: #58617f;
$custom-dark: #000000;

JSON

{
  "hex": "#10284d",
  "rgb": {
    "r": 16,
    "g": 40,
    "b": 77
  },
  "hsl": {
    "h": 216.393,
    "s": 65.591,
    "l": 18.235
  },
  "oklch": {
    "l": 0.28029,
    "c": 0.07457,
    "h": 258.9
  },
  "luminance": 0.02164
}

Semantic roles & 50–950 ramp

primary

#10284D

secondary

#876532

accent

#A63FE9

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04050A

muted

#79797C

Preview Lab

Preview with #10284D

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

Preview Lab → · Contrast checker → · Palette generator →