#283FAF#283FAF

#283FAF is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.7% C 0.180 H 268.4°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#283FAF
RGB	rgb(40, 63, 175)
HSL	hsl(230, 63%, 42%)
HSV	hsv(230, 77%, 69%)
CMYK	cmyk(77.1%, 64%, 0%, 31.4%)
CIE-LAB	lab(32.03, 32.01, -62.04)
CIE-LCH	lch(32.03, 69.81, 297.29°)
OKLab	oklab(42.66% -0.005 -0.1794)
OKLCH	oklch(42.66% 0.18 268.4)
XYZ	xyz(10.3878, 7.1001, 41.3721)
Luminance	0.0710 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283FAF #AF9828

analogous

#2883AF #283FAF #5528AF

triadic

#283FAF #AF283F #3FAF28

tetradic

#283FAF #AF2883 #AF9828 #28AF55

square

#283FAF #AF2883 #AF9828 #28AF55

split-complementary

#283FAF #AF5528 #83AF28

monochromatic

#111B4B #1D2D7D #283FAF #415AD4 #7385DF

Accessibility & contrast

On white

8.68

#283FAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#283FAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283FAF

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283FAF	#FFFFFF	#000000	##FFFFFF
##283FAF	1.00	8.68	2.42	8.68
#FFFFFF	8.68	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B3

Deuteranopia (green-blind)

#0045AD

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #283faf;
/* rgb */ color: rgb(40, 63, 175);
/* oklch */ color: oklch(42.7% 0.180 268.4);

Tailwind

colors: {
  custom: {
    50: '#7874c8',
    500: '#283faf',
    950: '#000000',
  },
}

SCSS

$custom: #283faf;
$custom-light: #7874c8;
$custom-dark: #000000;

JSON

{
  "hex": "#283faf",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 175
  },
  "hsl": {
    "h": 229.778,
    "s": 62.791,
    "l": 42.157
  },
  "oklch": {
    "l": 0.42661,
    "c": 0.17952,
    "h": 268.4
  },
  "luminance": 0.07101
}

Semantic roles & 50–950 ramp

primary

#283FAF

secondary

#C6B76D

accent

#CA42E6

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #283FAF

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

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