#283F62#283F62

#283F62 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 36.6% C 0.067 H 258.5°. Best body text is #FFFFFF at 10.62:1 contrast (WCAG AA passes).

Color values

HEX	#283F62
RGB	rgb(40, 63, 98)
HSL	hsl(216, 42%, 27%)
HSV	hsv(216, 59%, 38%)
CMYK	cmyk(59.2%, 35.7%, 0%, 61.6%)
CIE-LAB	lab(26.41, 2.73, -23.40)
CIE-LCH	lch(26.41, 23.56, 276.64°)
OKLab	oklab(36.63% -0.0134 -0.066)
OKLCH	oklch(36.63% 0.067 258.5)
XYZ	xyz(4.8564, 4.8876, 12.2404)
Luminance	0.0489 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F62 #624B28

analogous

#285C62 #283F62 #2E2862

triadic

#283F62 #62283F #3F6228

tetradic

#283F62 #62285C #624B28 #28622E

square

#283F62 #62285C #624B28 #28622E

split-complementary

#283F62 #622E28 #5C6228

monochromatic

#090E16 #162337 #283F62 #3A5B8D #4E77B7

Accessibility & contrast

On white

10.62

#283F62 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#283F62 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F62

10.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F62	#FFFFFF	#000000	##FFFFFF
##283F62	1.00	10.62	1.98	10.62
#FFFFFF	10.62	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#314163

Deuteranopia (green-blind)

#2A3C61

Tritanopia (blue-blind)

#03474C

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #283f62;
/* rgb */ color: rgb(40, 63, 98);
/* oklch */ color: oklch(36.6% 0.067 258.5);

Tailwind

colors: {
  custom: {
    50: '#67738f',
    500: '#283f62',
    950: '#000000',
  },
}

SCSS

$custom: #283f62;
$custom-light: #67738f;
$custom-dark: #000000;

JSON

{
  "hex": "#283f62",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 98
  },
  "hsl": {
    "h": 216.207,
    "s": 42.029,
    "l": 27.059
  },
  "oklch": {
    "l": 0.3663,
    "c": 0.06737,
    "h": 258.5
  },
  "luminance": 0.04888
}

Semantic roles & 50–950 ramp

primary

#283F62

secondary

#957A51

accent

#A156D2

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06080C

muted

#7A7B7D

Preview Lab

Preview with #283F62

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

Preview Lab → · Contrast checker → · Palette generator →