#283DA9#283DA9

#283DA9 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.7% C 0.174 H 268.8°. Best body text is #FFFFFF at 9.01:1 contrast (WCAG AA passes).

Color values

HEX	#283DA9
RGB	rgb(40, 61, 169)
HSL	hsl(230, 62%, 41%)
HSV	hsv(230, 76%, 66%)
CMYK	cmyk(76.3%, 63.9%, 0%, 33.7%)
CIE-LAB	lab(31.00, 31.09, -60.15)
CIE-LCH	lch(31.00, 67.70, 297.33°)
OKLab	oklab(41.74% -0.0036 -0.1739)
OKLCH	oklch(41.74% 0.174 268.8)
XYZ	xyz(9.7028, 6.6521, 38.3010)
Luminance	0.0665 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283DA9 #A99428

analogous

#287DA9 #283DA9 #5428A9

triadic

#283DA9 #A9283D #3DA928

tetradic

#283DA9 #A9287D #A99428 #28A954

square

#283DA9 #A9287D #A99428 #28A954

split-complementary

#283DA9 #A95428 #7DA928

monochromatic

#111946 #1C2B78 #283DA9 #3D55D1 #6F81DD

Accessibility & contrast

On white

9.01

#283DA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#283DA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283DA9

9.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283DA9	#FFFFFF	#000000	##FFFFFF
##283DA9	1.00	9.01	2.33	9.01
#FFFFFF	9.01	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAC

Deuteranopia (green-blind)

#0043A7

Tritanopia (blue-blind)

#00596D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #283da9;
/* rgb */ color: rgb(40, 61, 169);
/* oklch */ color: oklch(41.7% 0.174 268.8);

Tailwind

colors: {
  custom: {
    50: '#7672c4',
    500: '#283da9',
    950: '#000000',
  },
}

SCSS

$custom: #283da9;
$custom-light: #7672c4;
$custom-dark: #000000;

JSON

{
  "hex": "#283da9",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 169
  },
  "hsl": {
    "h": 230.233,
    "s": 61.722,
    "l": 40.98
  },
  "oklch": {
    "l": 0.41737,
    "c": 0.17395,
    "h": 268.8
  },
  "luminance": 0.06653
}

Semantic roles & 50–950 ramp

primary

#283DA9

secondary

#C4B569

accent

#CA43E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #283DA9

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

Preview Lab → · Contrast checker → · Palette generator →