#283DA2#283DA2

#283DA2 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.1% C 0.165 H 268.8°. Best body text is #FFFFFF at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#283DA2
RGB	rgb(40, 61, 162)
HSL	hsl(230, 60%, 40%)
HSV	hsv(230, 75%, 64%)
CMYK	cmyk(75.3%, 62.3%, 0%, 36.5%)
CIE-LAB	lab(30.39, 28.47, -56.93)
CIE-LCH	lch(30.39, 63.65, 296.57°)
OKLab	oklab(41.1% -0.0034 -0.1645)
OKLCH	oklch(41.1% 0.165 268.8)
XYZ	xyz(9.0632, 6.3963, 34.9324)
Luminance	0.0640 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283DA2 #A28D28

analogous

#287AA2 #283DA2 #5028A2

triadic

#283DA2 #A2283D #3DA228

tetradic

#283DA2 #A2287A #A28D28 #28A250

square

#283DA2 #A2287A #A28D28 #28A250

split-complementary

#283DA2 #A25028 #7AA228

monochromatic

#101840 #1C2B71 #283DA2 #3953CE #6A7DDA

Accessibility & contrast

On white

9.21

#283DA2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#283DA2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283DA2

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283DA2	#FFFFFF	#000000	##FFFFFF
##283DA2	1.00	9.21	2.28	9.21
#FFFFFF	9.21	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA5

Deuteranopia (green-blind)

#0042A0

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #283da2;
/* rgb */ color: rgb(40, 61, 162);
/* oklch */ color: oklch(41.1% 0.165 268.8);

Tailwind

colors: {
  custom: {
    50: '#7572be',
    500: '#283da2',
    950: '#000000',
  },
}

SCSS

$custom: #283da2;
$custom-light: #7572be;
$custom-dark: #000000;

JSON

{
  "hex": "#283da2",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 162
  },
  "hsl": {
    "h": 229.672,
    "s": 60.396,
    "l": 39.608
  },
  "oklch": {
    "l": 0.41097,
    "c": 0.16453,
    "h": 268.8
  },
  "luminance": 0.06397
}

Semantic roles & 50–950 ramp

primary

#283DA2

secondary

#C1B165

accent

#C844E4

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #283DA2

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

Preview Lab → · Contrast checker → · Palette generator →