#283A77#283A77

#283A77 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.9% C 0.107 H 268.4°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#283A77
RGB	rgb(40, 58, 119)
HSL	hsl(226, 50%, 31%)
HSV	hsv(226, 66%, 47%)
CMYK	cmyk(66.4%, 51.3%, 0%, 53.3%)
CIE-LAB	lab(26.18, 14.08, -37.19)
CIE-LCH	lch(26.18, 39.77, 290.74°)
OKLab	oklab(36.88% -0.0029 -0.1065)
OKLCH	oklch(36.88% 0.107 268.4)
XYZ	xyz(5.7168, 4.8086, 18.0761)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283A77 #776528

analogous

#286177 #283A77 #3D2877

triadic

#283A77 #77283A #3A7728

tetradic

#283A77 #772861 #776528 #28773D

square

#283A77 #772861 #776528 #28773D

split-complementary

#283A77 #773D28 #617728

monochromatic

#090D1B #192449 #283A77 #3750A5 #546EC5

Accessibility & contrast

On white

10.70

#283A77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#283A77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283A77

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283A77	#FFFFFF	#000000	##FFFFFF
##283A77	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#194279

Deuteranopia (green-blind)

#073B76

Tritanopia (blue-blind)

#004852

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #283a77;
/* rgb */ color: rgb(40, 58, 119);
/* oklch */ color: oklch(36.9% 0.107 268.4);

Tailwind

colors: {
  custom: {
    50: '#6b6f9f',
    500: '#283a77',
    950: '#000000',
  },
}

SCSS

$custom: #283a77;
$custom-light: #6b6f9f;
$custom-dark: #000000;

JSON

{
  "hex": "#283a77",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 119
  },
  "hsl": {
    "h": 226.329,
    "s": 49.686,
    "l": 31.176
  },
  "oklch": {
    "l": 0.36878,
    "c": 0.10655,
    "h": 268.4
  },
  "luminance": 0.04809
}

Semantic roles & 50–950 ramp

primary

#283A77

secondary

#A99552

accent

#BA4FD9

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #283A77

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

Preview Lab → · Contrast checker → · Palette generator →