#283680#283680

#283680 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.7% C 0.126 H 270.8°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX	#283680
RGB	rgb(40, 54, 128)
HSL	hsl(230, 52%, 33%)
HSV	hsv(230, 69%, 50%)
CMYK	cmyk(68.8%, 57.8%, 0%, 49.8%)
CIE-LAB	lab(25.71, 20.30, -43.64)
CIE-LCH	lch(25.71, 48.13, 294.95°)
OKLab	oklab(36.73% 0.0019 -0.1255)
OKLCH	oklch(36.73% 0.126 270.8)
XYZ	xyz(6.0892, 4.6474, 20.9940)
Luminance	0.0465 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283680 #807228

analogous

#286280 #283680 #462880

triadic

#283680 #802836 #368028

tetradic

#283680 #802862 #807228 #288046

square

#283680 #802862 #807228 #288046

split-complementary

#283680 #804628 #628028

monochromatic

#0B0F23 #192251 #283680 #374AAF #586ACB

Accessibility & contrast

On white

10.88

#283680 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#283680 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283680

10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283680	#FFFFFF	#000000	##FFFFFF
##283680	1.00	10.88	1.93	10.88
#FFFFFF	10.88	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004183

Deuteranopia (green-blind)

#00397F

Tritanopia (blue-blind)

#004855

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #283680;
/* rgb */ color: rgb(40, 54, 128);
/* oklch */ color: oklch(36.7% 0.126 270.8);

Tailwind

colors: {
  custom: {
    50: '#6d6ca5',
    500: '#283680',
    950: '#000000',
  },
}

SCSS

$custom: #283680;
$custom-light: #6d6ca5;
$custom-dark: #000000;

JSON

{
  "hex": "#283680",
  "rgb": {
    "r": 40,
    "g": 54,
    "b": 128
  },
  "hsl": {
    "h": 230.455,
    "s": 52.381,
    "l": 32.941
  },
  "oklch": {
    "l": 0.36731,
    "c": 0.12553,
    "h": 270.8
  },
  "luminance": 0.04648
}

Semantic roles & 50–950 ramp

primary

#283680

secondary

#B0A154

accent

#C54CDC

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#08070F

muted

#7A7A7F

Preview Lab

Preview with #283680

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

Preview Lab → · Contrast checker → · Palette generator →