#283DA7#283DA7

#283DA7 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.6% C 0.171 H 268.8°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#283DA7
RGB	rgb(40, 61, 167)
HSL	hsl(230, 61%, 41%)
HSV	hsv(230, 76%, 65%)
CMYK	cmyk(76%, 63.5%, 0%, 34.5%)
CIE-LAB	lab(30.83, 30.34, -59.23)
CIE-LCH	lch(30.83, 66.55, 297.12°)
OKLab	oklab(41.55% -0.0035 -0.1712)
OKLCH	oklch(41.55% 0.171 268.8)
XYZ	xyz(9.5165, 6.5776, 37.3198)
Luminance	0.0658 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283DA7 #A79228

analogous

#287CA7 #283DA7 #5228A7

triadic

#283DA7 #A7283D #3DA728

tetradic

#283DA7 #A7287C #A79228 #28A752

square

#283DA7 #A7287C #A79228 #28A752

split-complementary

#283DA7 #A75228 #7CA728

monochromatic

#101944 #1C2B76 #283DA7 #3C54D0 #6D80DC

Accessibility & contrast

On white

9.07

#283DA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#283DA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283DA7

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283DA7	#FFFFFF	#000000	##FFFFFF
##283DA7	1.00	9.07	2.32	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAA

Deuteranopia (green-blind)

#0043A5

Tritanopia (blue-blind)

#00596C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #283da7;
/* rgb */ color: rgb(40, 61, 167);
/* oklch */ color: oklch(41.6% 0.171 268.8);

Tailwind

colors: {
  custom: {
    50: '#7672c2',
    500: '#283da7',
    950: '#000000',
  },
}

SCSS

$custom: #283da7;
$custom-light: #7672c2;
$custom-dark: #000000;

JSON

{
  "hex": "#283da7",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 167
  },
  "hsl": {
    "h": 230.079,
    "s": 61.353,
    "l": 40.588
  },
  "oklch": {
    "l": 0.41552,
    "c": 0.17128,
    "h": 268.8
  },
  "luminance": 0.06579
}

Semantic roles & 50–950 ramp

primary

#283DA7

secondary

#C3B468

accent

#CA43E4

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #283DA7

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

Preview Lab → · Contrast checker → · Palette generator →