#283C60#283C60

#283C60 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 35.8% C 0.068 H 261.5°. Best body text is #FFFFFF at 11.02:1 contrast (WCAG AA passes).

Color values

HEX	#283C60
RGB	rgb(40, 60, 96)
HSL	hsl(219, 41%, 27%)
HSV	hsv(219, 58%, 38%)
CMYK	cmyk(58.3%, 37.5%, 0%, 62.4%)
CIE-LAB	lab(25.34, 4.03, -23.79)
CIE-LCH	lch(25.34, 24.13, 279.62°)
OKLab	oklab(35.76% -0.0101 -0.0672)
OKLCH	oklch(35.76% 0.068 261.5)
XYZ	xyz(4.6015, 4.5270, 11.6954)
Luminance	0.0453 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C60 #604C28

analogous

#285860 #283C60 #302860

triadic

#283C60 #60283C #3C6028

tetradic

#283C60 #602858 #604C28 #286030

square

#283C60 #602858 #604C28 #286030

split-complementary

#283C60 #603028 #586028

monochromatic

#090E16 #162135 #283C60 #3A578B #4D72B5

Accessibility & contrast

On white

11.02

#283C60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#283C60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C60

11.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C60	#FFFFFF	#000000	##FFFFFF
##283C60	1.00	11.02	1.91	11.02
#FFFFFF	11.02	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3F61

Deuteranopia (green-blind)

#273A5F

Tritanopia (blue-blind)

#074449

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #283c60;
/* rgb */ color: rgb(40, 60, 96);
/* oklch */ color: oklch(35.8% 0.068 261.5);

Tailwind

colors: {
  custom: {
    50: '#67718d',
    500: '#283c60',
    950: '#000000',
  },
}

SCSS

$custom: #283c60;
$custom-light: #67718d;
$custom-dark: #000000;

JSON

{
  "hex": "#283c60",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 96
  },
  "hsl": {
    "h": 218.571,
    "s": 41.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.35761,
    "c": 0.06794,
    "h": 261.5
  },
  "luminance": 0.04527
}

Semantic roles & 50–950 ramp

primary

#283C60

secondary

#937B51

accent

#A557D1

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #283C60

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

Preview Lab → · Contrast checker → · Palette generator →