#284FA0#284FA0

#284FA0 is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.6% C 0.139 H 262.8°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#284FA0
RGB	rgb(40, 79, 160)
HSL	hsl(221, 60%, 39%)
HSV	hsv(221, 75%, 63%)
CMYK	cmyk(75%, 50.6%, 0%, 37.3%)
CIE-LAB	lab(35.16, 15.62, -47.98)
CIE-LCH	lch(35.16, 50.46, 288.04°)
OKLab	oklab(44.64% -0.0175 -0.1379)
OKLCH	oklch(44.64% 0.139 262.8)
XYZ	xyz(10.0140, 8.5800, 34.3792)
Luminance	0.0858 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284FA0 #A07928

analogous

#288BA0 #284FA0 #3D28A0

triadic

#284FA0 #A0284F #4FA028

tetradic

#284FA0 #A0288B #A07928 #28A03D

square

#284FA0 #A0288B #A07928 #28A03D

split-complementary

#284FA0 #A03D28 #8BA028

monochromatic

#101F3E #1C376F #284FA0 #3868CD #698ED9

Accessibility & contrast

On white

7.73

#284FA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#284FA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284FA0

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284FA0	#FFFFFF	#000000	##FFFFFF
##284FA0	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F59A3

Deuteranopia (green-blind)

#004D9E

Tritanopia (blue-blind)

#006270

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #284fa0;
/* rgb */ color: rgb(40, 79, 160);
/* oklch */ color: oklch(44.6% 0.139 262.8);

Tailwind

colors: {
  custom: {
    50: '#737fbd',
    500: '#284fa0',
    950: '#000000',
  },
}

SCSS

$custom: #284fa0;
$custom-light: #737fbd;
$custom-dark: #000000;

JSON

{
  "hex": "#284fa0",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 160
  },
  "hsl": {
    "h": 220.5,
    "s": 60,
    "l": 39.216
  },
  "oklch": {
    "l": 0.44639,
    "c": 0.139,
    "h": 262.8
  },
  "luminance": 0.08581
}

Semantic roles & 50–950 ramp

primary

#284FA0

secondary

#C0A264

accent

#B045E3

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #284FA0

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

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