#283B7B#283B7B

#283B7B is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.4% C 0.111 H 268.2°. Best body text is #FFFFFF at 10.49:1 contrast (WCAG AA passes).

Color values

HEX	#283B7B
RGB	rgb(40, 59, 123)
HSL	hsl(226, 51%, 32%)
HSV	hsv(226, 67%, 48%)
CMYK	cmyk(67.5%, 52%, 0%, 51.8%)
CIE-LAB	lab(26.76, 14.92, -38.79)
CIE-LCH	lch(26.76, 41.56, 291.04°)
OKLab	oklab(37.41% -0.0035 -0.1112)
OKLCH	oklch(37.41% 0.111 268.2)
XYZ	xyz(6.0130, 5.0086, 19.3849)
Luminance	0.0501 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283B7B #7B6828

analogous

#28657B #283B7B #3F287B

triadic

#283B7B #7B283B #3B7B28

tetradic

#283B7B #7B2865 #7B6828 #287B3F

square

#283B7B #7B2865 #7B6828 #287B3F

split-complementary

#283B7B #7B3F28 #657B28

monochromatic

#0A0F1F #19254D #283B7B #3751A9 #5670C8

Accessibility & contrast

On white

10.49

#283B7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#283B7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283B7B

10.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283B7B	#FFFFFF	#000000	##FFFFFF
##283B7B	1.00	10.49	2.00	10.49
#FFFFFF	10.49	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17437D

Deuteranopia (green-blind)

#013C7A

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #283b7b;
/* rgb */ color: rgb(40, 59, 123);
/* oklch */ color: oklch(37.4% 0.111 268.2);

Tailwind

colors: {
  custom: {
    50: '#6c70a2',
    500: '#283b7b',
    950: '#000000',
  },
}

SCSS

$custom: #283b7b;
$custom-light: #6c70a2;
$custom-dark: #000000;

JSON

{
  "hex": "#283b7b",
  "rgb": {
    "r": 40,
    "g": 59,
    "b": 123
  },
  "hsl": {
    "h": 226.265,
    "s": 50.92,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37406,
    "c": 0.11124,
    "h": 268.2
  },
  "luminance": 0.05009
}

Semantic roles & 50–950 ramp

primary

#283B7B

secondary

#AD9852

accent

#BA4DDA

background

#F6F6FA

surface

#ECECF3

border

#C7C7CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #283B7B

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

Preview Lab → · Contrast checker → · Palette generator →