#283BA2#283BA2

#283BA2 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.7% C 0.167 H 269.3°. Best body text is #FFFFFF at 9.39:1 contrast (WCAG AA passes).

Color values

HEX	#283BA2
RGB	rgb(40, 59, 162)
HSL	hsl(231, 60%, 40%)
HSV	hsv(231, 75%, 64%)
CMYK	cmyk(75.3%, 63.6%, 0%, 36.5%)
CIE-LAB	lab(29.88, 29.79, -57.77)
CIE-LCH	lch(29.88, 65.00, 297.28°)
OKLab	oklab(40.72% -0.0021 -0.167)
OKLCH	oklch(40.72% 0.167 269.3)
XYZ	xyz(8.9584, 6.1867, 34.8974)
Luminance	0.0619 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283BA2 #A28F28

analogous

#2878A2 #283BA2 #5228A2

triadic

#283BA2 #A2283B #3BA228

tetradic

#283BA2 #A22878 #A28F28 #28A252

square

#283BA2 #A22878 #A28F28 #28A252

split-complementary

#283BA2 #A25228 #78A228

monochromatic

#101740 #1C2971 #283BA2 #3950CE #6A7CDA

Accessibility & contrast

On white

9.39

#283BA2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#283BA2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283BA2

9.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283BA2	#FFFFFF	#000000	##FFFFFF
##283BA2	1.00	9.39	2.24	9.39
#FFFFFF	9.39	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA5

Deuteranopia (green-blind)

#0041A0

Tritanopia (blue-blind)

#005669

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #283ba2;
/* rgb */ color: rgb(40, 59, 162);
/* oklch */ color: oklch(40.7% 0.167 269.3);

Tailwind

colors: {
  custom: {
    50: '#7570be',
    500: '#283ba2',
    950: '#000000',
  },
}

SCSS

$custom: #283ba2;
$custom-light: #7570be;
$custom-dark: #000000;

JSON

{
  "hex": "#283ba2",
  "rgb": {
    "r": 40,
    "g": 59,
    "b": 162
  },
  "hsl": {
    "h": 230.656,
    "s": 60.396,
    "l": 39.608
  },
  "oklch": {
    "l": 0.40719,
    "c": 0.16697,
    "h": 269.3
  },
  "luminance": 0.06188
}

Semantic roles & 50–950 ramp

primary

#283BA2

secondary

#C1B265

accent

#CB44E4

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #283BA2

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

Preview Lab → · Contrast checker → · Palette generator →