#283687#283687

#283687 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.3% C 0.136 H 270.9°. Best body text is #FFFFFF at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#283687
RGB	rgb(40, 54, 135)
HSL	hsl(231, 54%, 34%)
HSV	hsv(231, 70%, 53%)
CMYK	cmyk(70.4%, 60%, 0%, 47.1%)
CIE-LAB	lab(26.27, 22.97, -47.10)
CIE-LCH	lch(26.27, 52.40, 295.99°)
OKLab	oklab(37.33% 0.0021 -0.1357)
OKLCH	oklch(37.33% 0.136 270.9)
XYZ	xyz(6.5659, 4.8381, 23.5048)
Luminance	0.0484 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283687 #877928

analogous

#286687 #283687 #4A2887

triadic

#283687 #872836 #368728

tetradic

#283687 #872866 #877928 #28874A

square

#283687 #872866 #877928 #28874A

split-complementary

#283687 #874A28 #668728

monochromatic

#0C1029 #1A2358 #283687 #3649B6 #5B6CCE

Accessibility & contrast

On white

10.67

#283687 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#283687 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283687

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283687	#FFFFFF	#000000	##FFFFFF
##283687	1.00	10.67	1.97	10.67
#FFFFFF	10.67	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438A

Deuteranopia (green-blind)

#003A85

Tritanopia (blue-blind)

#004A59

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #283687;
/* rgb */ color: rgb(40, 54, 135);
/* oklch */ color: oklch(37.3% 0.136 270.9);

Tailwind

colors: {
  custom: {
    50: '#6f6cab',
    500: '#283687',
    950: '#000000',
  },
}

SCSS

$custom: #283687;
$custom-light: #6f6cab;
$custom-dark: #000000;

JSON

{
  "hex": "#283687",
  "rgb": {
    "r": 40,
    "g": 54,
    "b": 135
  },
  "hsl": {
    "h": 231.158,
    "s": 54.286,
    "l": 34.314
  },
  "oklch": {
    "l": 0.37329,
    "c": 0.13573,
    "h": 270.9
  },
  "luminance": 0.04839
}

Semantic roles & 50–950 ramp

primary

#283687

secondary

#B4A657

accent

#C84ADE

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283687

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

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