#283E9E#283E9E

#283E9E is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.9% C 0.158 H 268.5°. Best body text is #FFFFFF at 9.24:1 contrast (WCAG AA passes).

Color values

HEX	#283E9E
RGB	rgb(40, 62, 158)
HSL	hsl(229, 60%, 39%)
HSV	hsv(229, 75%, 62%)
CMYK	cmyk(74.7%, 60.8%, 0%, 38%)
CIE-LAB	lab(30.31, 26.29, -54.64)
CIE-LCH	lch(30.31, 60.63, 295.69°)
OKLab	oklab(40.93% -0.0041 -0.1577)
OKLCH	oklch(40.93% 0.158 268.5)
XYZ	xyz(8.7671, 6.3641, 33.1075)
Luminance	0.0636 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283E9E #9E8828

analogous

#28799E #283E9E #4D289E

triadic

#283E9E #9E283E #3E9E28

tetradic

#283E9E #9E2879 #9E8828 #289E4D

square

#283E9E #9E2879 #9E8828 #289E4D

split-complementary

#283E9E #9E4D28 #799E28

monochromatic

#0F183C #1C2B6D #283E9E #3753CC #687DD9

Accessibility & contrast

On white

9.24

#283E9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#283E9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283E9E

9.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283E9E	#FFFFFF	#000000	##FFFFFF
##283E9E	1.00	9.24	2.27	9.24
#FFFFFF	9.24	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA1

Deuteranopia (green-blind)

#00429C

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #283e9e;
/* rgb */ color: rgb(40, 62, 158);
/* oklch */ color: oklch(40.9% 0.158 268.5);

Tailwind

colors: {
  custom: {
    50: '#7473bb',
    500: '#283e9e',
    950: '#000000',
  },
}

SCSS

$custom: #283e9e;
$custom-light: #7473bb;
$custom-dark: #000000;

JSON

{
  "hex": "#283e9e",
  "rgb": {
    "r": 40,
    "g": 62,
    "b": 158
  },
  "hsl": {
    "h": 228.814,
    "s": 59.596,
    "l": 38.824
  },
  "oklch": {
    "l": 0.40934,
    "c": 0.1578,
    "h": 268.5
  },
  "luminance": 0.06365
}

Semantic roles & 50–950 ramp

primary

#283E9E

secondary

#BFAE63

accent

#C545E3

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #283E9E

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

Preview Lab → · Contrast checker → · Palette generator →