#284F91#284F91

#284F91 is a dark, moderate blue. Relative luminance 0.081; OKLCH L 43.5% C 0.118 H 260.2°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#284F91
RGB	rgb(40, 79, 145)
HSL	hsl(218, 57%, 36%)
HSV	hsv(218, 72%, 57%)
CMYK	cmyk(72.4%, 45.5%, 0%, 43.1%)
CIE-LAB	lab(34.16, 9.81, -40.52)
CIE-LCH	lch(34.16, 41.69, 283.61°)
OKLab	oklab(43.55% -0.0199 -0.1159)
OKLCH	oklch(43.55% 0.118 260.2)
XYZ	xyz(8.7801, 8.0865, 27.8807)
Luminance	0.0809 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284F91 #916A28

analogous

#288491 #284F91 #362891

triadic

#284F91 #91284F #4F9128

tetradic

#284F91 #912884 #916A28 #289136

square

#284F91 #912884 #916A28 #289136

split-complementary

#284F91 #913628 #849128

monochromatic

#0E1B31 #1B3561 #284F91 #3569C1 #608BD3

Accessibility & contrast

On white

8.02

#284F91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#284F91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284F91

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284F91	#FFFFFF	#000000	##FFFFFF
##284F91	1.00	8.02	2.62	8.02
#FFFFFF	8.02	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E5694

Deuteranopia (green-blind)

#1A4C90

Tritanopia (blue-blind)

#005E69

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #284f91;
/* rgb */ color: rgb(40, 79, 145);
/* oklch */ color: oklch(43.5% 0.118 260.2);

Tailwind

colors: {
  custom: {
    50: '#707fb2',
    500: '#284f91',
    950: '#000000',
  },
}

SCSS

$custom: #284f91;
$custom-light: #707fb2;
$custom-dark: #000000;

JSON

{
  "hex": "#284f91",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 145
  },
  "hsl": {
    "h": 217.714,
    "s": 56.757,
    "l": 36.275
  },
  "oklch": {
    "l": 0.4355,
    "c": 0.11763,
    "h": 260.2
  },
  "luminance": 0.08087
}

Semantic roles & 50–950 ramp

primary

#284F91

secondary

#B9965C

accent

#A748E0

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #284F91

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

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