#283A7A#283A7A

#283A7A is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.1% C 0.111 H 268.7°. Best body text is #FFFFFF at 10.63:1 contrast (WCAG AA passes).

Color values

HEX	#283A7A
RGB	rgb(40, 58, 122)
HSL	hsl(227, 51%, 32%)
HSV	hsv(227, 67%, 48%)
CMYK	cmyk(67.2%, 52.5%, 0%, 52.2%)
CIE-LAB	lab(26.40, 15.23, -38.75)
CIE-LCH	lch(26.40, 41.63, 291.46°)
OKLab	oklab(37.11% -0.0026 -0.1111)
OKLCH	oklch(37.11% 0.111 268.7)
XYZ	xyz(5.8998, 4.8818, 19.0400)
Luminance	0.0488 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283A7A #7A6828

analogous

#28637A #283A7A #3F287A

triadic

#283A7A #7A283A #3A7A28

tetradic

#283A7A #7A2863 #7A6828 #287A3F

square

#283A7A #7A2863 #7A6828 #287A3F

split-complementary

#283A7A #7A3F28 #637A28

monochromatic

#0A0E1E #19244C #283A7A #3750A8 #556EC7

Accessibility & contrast

On white

10.63

#283A7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#283A7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283A7A

10.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283A7A	#FFFFFF	#000000	##FFFFFF
##283A7A	1.00	10.63	1.98	10.63
#FFFFFF	10.63	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16427C

Deuteranopia (green-blind)

#003B79

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #283a7a;
/* rgb */ color: rgb(40, 58, 122);
/* oklch */ color: oklch(37.1% 0.111 268.7);

Tailwind

colors: {
  custom: {
    50: '#6c6fa1',
    500: '#283a7a',
    950: '#000000',
  },
}

SCSS

$custom: #283a7a;
$custom-light: #6c6fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#283a7a",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 122
  },
  "hsl": {
    "h": 226.829,
    "s": 50.617,
    "l": 31.765
  },
  "oklch": {
    "l": 0.37108,
    "c": 0.11111,
    "h": 268.7
  },
  "luminance": 0.04882
}

Semantic roles & 50–950 ramp

primary

#283A7A

secondary

#AC9852

accent

#BB4EDA

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070F

muted

#7A7A7E

Preview Lab

Preview with #283A7A

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

Preview Lab → · Contrast checker → · Palette generator →