#283A76#283A76

#283A76 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.8% C 0.105 H 268.3°. Best body text is #FFFFFF at 10.73:1 contrast (WCAG AA passes).

Color values

HEX	#283A76
RGB	rgb(40, 58, 118)
HSL	hsl(226, 49%, 31%)
HSV	hsv(226, 66%, 46%)
CMYK	cmyk(66.1%, 50.8%, 0%, 53.7%)
CIE-LAB	lab(26.11, 13.70, -36.67)
CIE-LCH	lch(26.11, 39.15, 290.48°)
OKLab	oklab(36.8% -0.0031 -0.105)
OKLCH	oklch(36.8% 0.105 268.3)
XYZ	xyz(5.6570, 4.7847, 17.7615)
Luminance	0.0478 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283A76 #766428

analogous

#286176 #283A76 #3D2876

triadic

#283A76 #76283A #3A7628

tetradic

#283A76 #762861 #766428 #28763D

square

#283A76 #762861 #766428 #28763D

split-complementary

#283A76 #763D28 #617628

monochromatic

#090D1B #192448 #283A76 #3750A4 #546EC5

Accessibility & contrast

On white

10.73

#283A76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#283A76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283A76

10.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283A76	#FFFFFF	#000000	##FFFFFF
##283A76	1.00	10.73	1.96	10.73
#FFFFFF	10.73	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B4278

Deuteranopia (green-blind)

#0A3A75

Tritanopia (blue-blind)

#004852

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #283a76;
/* rgb */ color: rgb(40, 58, 118);
/* oklch */ color: oklch(36.8% 0.105 268.3);

Tailwind

colors: {
  custom: {
    50: '#6b6f9e',
    500: '#283a76',
    950: '#000000',
  },
}

SCSS

$custom: #283a76;
$custom-light: #6b6f9e;
$custom-dark: #000000;

JSON

{
  "hex": "#283a76",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 118
  },
  "hsl": {
    "h": 226.154,
    "s": 49.367,
    "l": 30.98
  },
  "oklch": {
    "l": 0.36802,
    "c": 0.10501,
    "h": 268.3
  },
  "luminance": 0.04785
}

Semantic roles & 50–950 ramp

primary

#283A76

secondary

#A89452

accent

#B94FD9

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #283A76

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

Preview Lab → · Contrast checker → · Palette generator →