#283C58#283C58

#283C58 is a dark, muted blue. Relative luminance 0.044; OKLCH L 35.3% C 0.055 H 256.9°. Best body text is #FFFFFF at 11.19:1 contrast (WCAG AA passes).

Color values

HEX	#283C58
RGB	rgb(40, 60, 88)
HSL	hsl(215, 38%, 25%)
HSV	hsv(215, 55%, 35%)
CMYK	cmyk(54.5%, 31.8%, 0%, 65.5%)
CIE-LAB	lab(24.91, 1.15, -19.25)
CIE-LCH	lch(24.91, 19.29, 273.41°)
OKLab	oklab(35.28% -0.0126 -0.054)
OKLCH	oklch(35.28% 0.055 256.9)
XYZ	xyz(4.2518, 4.3871, 9.8534)
Luminance	0.0439 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C58 #584428

analogous

#285458 #283C58 #2C2858

triadic

#283C58 #58283C #3C5828

tetradic

#283C58 #582854 #584428 #28582C

square

#283C58 #582854 #584428 #28582C

split-complementary

#283C58 #582C28 #545828

monochromatic

#0A0E15 #151F2E #283C58 #3B5982 #4E75AC

Accessibility & contrast

On white

11.19

#283C58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#283C58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C58

11.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C58	#FFFFFF	#000000	##FFFFFF
##283C58	1.00	11.19	1.88	11.19
#FFFFFF	11.19	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#313E59

Deuteranopia (green-blind)

#2B3957

Tritanopia (blue-blind)

#114246

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #283c58;
/* rgb */ color: rgb(40, 60, 88);
/* oklch */ color: oklch(35.3% 0.055 256.9);

Tailwind

colors: {
  custom: {
    50: '#657187',
    500: '#283c58',
    950: '#000000',
  },
}

SCSS

$custom: #283c58;
$custom-light: #657187;
$custom-dark: #000000;

JSON

{
  "hex": "#283c58",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 88
  },
  "hsl": {
    "h": 215,
    "s": 37.5,
    "l": 25.098
  },
  "oklch": {
    "l": 0.35284,
    "c": 0.05546,
    "h": 256.9
  },
  "luminance": 0.04387
}

Semantic roles & 50–950 ramp

primary

#283C58

secondary

#8B7351

accent

#9D5ACD

background

#F6F6F8

surface

#EBECEF

border

#C6C7CA

text

#06070B

muted

#7A7A7C

Preview Lab

Preview with #283C58

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

Preview Lab → · Contrast checker → · Palette generator →