#283EA2#283EA2

#283EA2 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.3% C 0.163 H 268.6°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#283EA2
RGB	rgb(40, 62, 162)
HSL	hsl(229, 60%, 40%)
HSV	hsv(229, 75%, 64%)
CMYK	cmyk(75.3%, 61.7%, 0%, 36.5%)
CIE-LAB	lab(30.65, 27.80, -56.51)
CIE-LCH	lch(30.65, 62.98, 296.20°)
OKLab	oklab(41.29% -0.0041 -0.1632)
OKLCH	oklch(41.29% 0.163 268.6)
XYZ	xyz(9.1170, 6.5040, 34.9503)
Luminance	0.0650 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283EA2 #A28C28

analogous

#287BA2 #283EA2 #4F28A2

triadic

#283EA2 #A2283E #3EA228

tetradic

#283EA2 #A2287B #A28C28 #28A24F

square

#283EA2 #A2287B #A28C28 #28A24F

split-complementary

#283EA2 #A24F28 #7BA228

monochromatic

#101840 #1C2B71 #283EA2 #3954CE #6A7EDA

Accessibility & contrast

On white

9.13

#283EA2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#283EA2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283EA2

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283EA2	#FFFFFF	#000000	##FFFFFF
##283EA2	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA5

Deuteranopia (green-blind)

#0043A0

Tritanopia (blue-blind)

#00586A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #283ea2;
/* rgb */ color: rgb(40, 62, 162);
/* oklch */ color: oklch(41.3% 0.163 268.6);

Tailwind

colors: {
  custom: {
    50: '#7573be',
    500: '#283ea2',
    950: '#000000',
  },
}

SCSS

$custom: #283ea2;
$custom-light: #7573be;
$custom-dark: #000000;

JSON

{
  "hex": "#283ea2",
  "rgb": {
    "r": 40,
    "g": 62,
    "b": 162
  },
  "hsl": {
    "h": 229.18,
    "s": 60.396,
    "l": 39.608
  },
  "oklch": {
    "l": 0.41289,
    "c": 0.16329,
    "h": 268.6
  },
  "luminance": 0.06505
}

Semantic roles & 50–950 ramp

primary

#283EA2

secondary

#C1B065

accent

#C744E4

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #283EA2

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

Preview Lab → · Contrast checker → · Palette generator →