#283BAC#283BAC

#283BAC is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.7% C 0.180 H 269.2°. Best body text is #FFFFFF at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#283BAC
RGB	rgb(40, 59, 172)
HSL	hsl(231, 62%, 42%)
HSV	hsv(231, 77%, 67%)
CMYK	cmyk(76.7%, 65.7%, 0%, 32.5%)
CIE-LAB	lab(30.78, 33.50, -62.31)
CIE-LCH	lch(30.78, 70.75, 298.26°)
OKLab	oklab(41.65% -0.0025 -0.1803)
OKLCH	oklch(41.65% 0.18 269.2)
XYZ	xyz(9.8829, 6.5565, 39.7664)
Luminance	0.0656 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283BAC #AC9928

analogous

#287DAC #283BAC #5728AC

triadic

#283BAC #AC283B #3BAC28

tetradic

#283BAC #AC287D #AC9928 #28AC57

square

#283BAC #AC287D #AC9928 #28AC57

split-complementary

#283BAC #AC5728 #7DAC28

monochromatic

#111949 #1C2A7A #283BAC #3F54D2 #7180DE

Accessibility & contrast

On white

9.08

#283BAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#283BAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283BAC

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283BAC	#FFFFFF	#000000	##FFFFFF
##283BAC	1.00	9.08	2.31	9.08
#FFFFFF	9.08	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB0

Deuteranopia (green-blind)

#0042AA

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #283bac;
/* rgb */ color: rgb(40, 59, 172);
/* oklch */ color: oklch(41.7% 0.180 269.2);

Tailwind

colors: {
  custom: {
    50: '#7771c6',
    500: '#283bac',
    950: '#000000',
  },
}

SCSS

$custom: #283bac;
$custom-light: #7771c6;
$custom-dark: #000000;

JSON

{
  "hex": "#283bac",
  "rgb": {
    "r": 40,
    "g": 59,
    "b": 172
  },
  "hsl": {
    "h": 231.364,
    "s": 62.264,
    "l": 41.569
  },
  "oklch": {
    "l": 0.41653,
    "c": 0.18029,
    "h": 269.2
  },
  "luminance": 0.06558
}

Semantic roles & 50–950 ramp

primary

#283BAC

secondary

#C5B86B

accent

#CE42E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #283BAC

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

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