#284E7B#284E7B

#284E7B is a dark, moderate cyan. Relative luminance 0.073; OKLCH L 41.9% C 0.087 H 254.0°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#284E7B
RGB	rgb(40, 78, 123)
HSL	hsl(213, 51%, 32%)
HSV	hsv(213, 67%, 48%)
CMYK	cmyk(67.5%, 36.6%, 0%, 51.8%)
CIE-LAB	lab(32.55, 2.05, -29.56)
CIE-LCH	lch(32.55, 29.63, 273.97°)
OKLab	oklab(41.87% -0.0241 -0.0838)
OKLCH	oklch(41.87% 0.087 254)
XYZ	xyz(7.1733, 7.3293, 19.7717)
Luminance	0.0733 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284E7B #7B5528

analogous

#28787B #284E7B #2C287B

triadic

#284E7B #7B284E #4E7B28

tetradic

#284E7B #7B2878 #7B5528 #287B2C

square

#284E7B #7B2878 #7B5528 #287B2C

split-complementary

#284E7B #7B2C28 #787B28

monochromatic

#0A131F #19314D #284E7B #376BA9 #568AC8

Accessibility & contrast

On white

8.52

#284E7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#284E7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284E7B

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284E7B	#FFFFFF	#000000	##FFFFFF
##284E7B	1.00	8.52	2.47	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A517D

Deuteranopia (green-blind)

#2F497A

Tritanopia (blue-blind)

#00585E

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #284e7b;
/* rgb */ color: rgb(40, 78, 123);
/* oklch */ color: oklch(41.9% 0.087 254.0);

Tailwind

colors: {
  custom: {
    50: '#6b7fa1',
    500: '#284e7b',
    950: '#000000',
  },
}

SCSS

$custom: #284e7b;
$custom-light: #6b7fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#284e7b",
  "rgb": {
    "r": 40,
    "g": 78,
    "b": 123
  },
  "hsl": {
    "h": 212.53,
    "s": 50.92,
    "l": 31.961
  },
  "oklch": {
    "l": 0.41869,
    "c": 0.08722,
    "h": 254
  },
  "luminance": 0.0733
}

Semantic roles & 50–950 ramp

primary

#284E7B

secondary

#AD8352

accent

#9A4DDA

background

#F6F7F9

surface

#ECEEF2

border

#C7C9CC

text

#070A0F

muted

#7A7C7E

Preview Lab

Preview with #284E7B

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

Preview Lab → · Contrast checker → · Palette generator →