#283771#283771

#283771 is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.7% C 0.102 H 269.7°. Best body text is #FFFFFF at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#283771
RGB	rgb(40, 55, 113)
HSL	hsl(228, 48%, 30%)
HSV	hsv(228, 65%, 44%)
CMYK	cmyk(64.6%, 51.3%, 0%, 55.7%)
CIE-LAB	lab(24.88, 13.88, -35.48)
CIE-LCH	lch(24.88, 38.10, 291.37°)
OKLab	oklab(35.75% -0.0004 -0.1015)
OKLCH	oklch(35.75% 0.102 269.7)
XYZ	xyz(5.2209, 4.3753, 16.1890)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283771 #716228

analogous

#285C71 #283771 #3D2871

triadic

#283771 #712837 #377128

tetradic

#283771 #71285C #716228 #28713D

square

#283771 #71285C #716228 #28713D

split-complementary

#283771 #713D28 #5C7128

monochromatic

#080B17 #182144 #283771 #384D9E #5269C2

Accessibility & contrast

On white

11.20

#283771 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#283771 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283771

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283771	#FFFFFF	#000000	##FFFFFF
##283771	1.00	11.20	1.88	11.20
#FFFFFF	11.20	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#193E73

Deuteranopia (green-blind)

#0A3870

Tritanopia (blue-blind)

#00444E

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #283771;
/* rgb */ color: rgb(40, 55, 113);
/* oklch */ color: oklch(35.7% 0.102 269.7);

Tailwind

colors: {
  custom: {
    50: '#6a6d9a',
    500: '#283771',
    950: '#000000',
  },
}

SCSS

$custom: #283771;
$custom-light: #6a6d9a;
$custom-dark: #000000;

JSON

{
  "hex": "#283771",
  "rgb": {
    "r": 40,
    "g": 55,
    "b": 113
  },
  "hsl": {
    "h": 227.671,
    "s": 47.712,
    "l": 30
  },
  "oklch": {
    "l": 0.35749,
    "c": 0.10151,
    "h": 269.7
  },
  "luminance": 0.04376
}

Semantic roles & 50–950 ramp

primary

#283771

secondary

#A39252

accent

#BC50D7

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #283771

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

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