#283FA2#283FA2

#283FA2 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.5% C 0.162 H 268.3°. Best body text is #FFFFFF at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#283FA2
RGB	rgb(40, 63, 162)
HSL	hsl(229, 60%, 40%)
HSV	hsv(229, 75%, 64%)
CMYK	cmyk(75.3%, 61.1%, 0%, 36.5%)
CIE-LAB	lab(30.91, 27.14, -56.08)
CIE-LCH	lch(30.91, 62.30, 295.82°)
OKLab	oklab(41.48% -0.0048 -0.162)
OKLCH	oklch(41.48% 0.162 268.3)
XYZ	xyz(9.1719, 6.6138, 34.9686)
Luminance	0.0662 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283FA2 #A28B28

analogous

#287CA2 #283FA2 #4E28A2

triadic

#283FA2 #A2283F #3FA228

tetradic

#283FA2 #A2287C #A28B28 #28A24E

square

#283FA2 #A2287C #A28B28 #28A24E

split-complementary

#283FA2 #A24E28 #7CA228

monochromatic

#101940 #1C2C71 #283FA2 #3955CE #6A7FDA

Accessibility & contrast

On white

9.04

#283FA2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#283FA2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283FA2

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283FA2	#FFFFFF	#000000	##FFFFFF
##283FA2	1.00	9.04	2.32	9.04
#FFFFFF	9.04	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA5

Deuteranopia (green-blind)

#0043A0

Tritanopia (blue-blind)

#00586A

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #283fa2;
/* rgb */ color: rgb(40, 63, 162);
/* oklch */ color: oklch(41.5% 0.162 268.3);

Tailwind

colors: {
  custom: {
    50: '#7473be',
    500: '#283fa2',
    950: '#000000',
  },
}

SCSS

$custom: #283fa2;
$custom-light: #7473be;
$custom-dark: #000000;

JSON

{
  "hex": "#283fa2",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 162
  },
  "hsl": {
    "h": 228.689,
    "s": 60.396,
    "l": 39.608
  },
  "oklch": {
    "l": 0.41483,
    "c": 0.16204,
    "h": 268.3
  },
  "luminance": 0.06615
}

Semantic roles & 50–950 ramp

primary

#283FA2

secondary

#C1AF65

accent

#C644E4

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #283FA2

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

Preview Lab → · Contrast checker → · Palette generator →