#284D91#284D91

#284D91 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.1% C 0.120 H 261.4°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#284D91
RGB	rgb(40, 77, 145)
HSL	hsl(219, 57%, 36%)
HSV	hsv(219, 72%, 57%)
CMYK	cmyk(72.4%, 46.9%, 0%, 43.1%)
CIE-LAB	lab(33.57, 11.15, -41.47)
CIE-LCH	lch(33.57, 42.94, 285.04°)
OKLab	oklab(43.09% -0.018 -0.1188)
OKLCH	oklch(43.09% 0.12 261.4)
XYZ	xyz(8.6380, 7.8023, 27.8333)
Luminance	0.0780 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284D91 #916C28

analogous

#288291 #284D91 #382891

triadic

#284D91 #91284D #4D9128

tetradic

#284D91 #912882 #916C28 #289138

square

#284D91 #912882 #916C28 #289138

split-complementary

#284D91 #913828 #829128

monochromatic

#0E1A31 #1B3461 #284D91 #3566C1 #6089D3

Accessibility & contrast

On white

8.20

#284D91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#284D91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284D91

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284D91	#FFFFFF	#000000	##FFFFFF
##284D91	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A5494

Deuteranopia (green-blind)

#144A90

Tritanopia (blue-blind)

#005D68

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #284d91;
/* rgb */ color: rgb(40, 77, 145);
/* oklch */ color: oklch(43.1% 0.120 261.4);

Tailwind

colors: {
  custom: {
    50: '#707eb2',
    500: '#284d91',
    950: '#000000',
  },
}

SCSS

$custom: #284d91;
$custom-light: #707eb2;
$custom-dark: #000000;

JSON

{
  "hex": "#284d91",
  "rgb": {
    "r": 40,
    "g": 77,
    "b": 145
  },
  "hsl": {
    "h": 218.857,
    "s": 56.757,
    "l": 36.275
  },
  "oklch": {
    "l": 0.43092,
    "c": 0.12013,
    "h": 261.4
  },
  "luminance": 0.07803
}

Semantic roles & 50–950 ramp

primary

#284D91

secondary

#B9985C

accent

#AA48E0

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #284D91

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

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