#283CA0#283CA0

#283CA0 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.7% C 0.163 H 269.1°. Best body text is #FFFFFF at 9.36:1 contrast (WCAG AA passes).

Color values

HEX	#283CA0
RGB	rgb(40, 60, 160)
HSL	hsl(230, 60%, 39%)
HSV	hsv(230, 75%, 63%)
CMYK	cmyk(75%, 62.5%, 0%, 37.3%)
CIE-LAB	lab(29.96, 28.38, -56.42)
CIE-LCH	lch(29.96, 63.16, 296.70°)
OKLab	oklab(40.73% -0.0027 -0.163)
OKLCH	oklch(40.73% 0.163 269.1)
XYZ	xyz(8.8339, 6.2200, 33.9859)
Luminance	0.0622 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283CA0 #A08C28

analogous

#2878A0 #283CA0 #5028A0

triadic

#283CA0 #A0283C #3CA028

tetradic

#283CA0 #A02878 #A08C28 #28A050

square

#283CA0 #A02878 #A08C28 #28A050

split-complementary

#283CA0 #A05028 #78A028

monochromatic

#10173E #1C2A6F #283CA0 #3851CD #697CD9

Accessibility & contrast

On white

9.36

#283CA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#283CA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283CA0

9.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283CA0	#FFFFFF	#000000	##FFFFFF
##283CA0	1.00	9.36	2.24	9.36
#FFFFFF	9.36	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA3

Deuteranopia (green-blind)

#00419E

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #283ca0;
/* rgb */ color: rgb(40, 60, 160);
/* oklch */ color: oklch(40.7% 0.163 269.1);

Tailwind

colors: {
  custom: {
    50: '#7471bd',
    500: '#283ca0',
    950: '#000000',
  },
}

SCSS

$custom: #283ca0;
$custom-light: #7471bd;
$custom-dark: #000000;

JSON

{
  "hex": "#283ca0",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 160
  },
  "hsl": {
    "h": 230,
    "s": 60,
    "l": 39.216
  },
  "oklch": {
    "l": 0.40725,
    "c": 0.16304,
    "h": 269.1
  },
  "luminance": 0.06221
}

Semantic roles & 50–950 ramp

primary

#283CA0

secondary

#C0B064

accent

#C945E3

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #283CA0

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

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