#284DAB#284DAB

#284DAB is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.1% C 0.157 H 264.6°. Best body text is #FFFFFF at 7.66:1 contrast (WCAG AA passes).

Color values

HEX	#284DAB
RGB	rgb(40, 77, 171)
HSL	hsl(223, 62%, 41%)
HSV	hsv(223, 77%, 67%)
CMYK	cmyk(76.6%, 55%, 0%, 32.9%)
CIE-LAB	lab(35.40, 21.22, -54.18)
CIE-LCH	lch(35.40, 58.18, 291.39°)
OKLab	oklab(45.07% -0.0147 -0.1562)
OKLCH	oklch(45.07% 0.157 264.6)
XYZ	xyz(10.8770, 8.6979, 39.6258)
Luminance	0.0870 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284DAB #AB8628

analogous

#288FAB #284DAB #4428AB

triadic

#284DAB #AB284D #4DAB28

tetradic

#284DAB #AB288F #AB8628 #28AB44

square

#284DAB #AB288F #AB8628 #28AB44

split-complementary

#284DAB #AB4428 #8FAB28

monochromatic

#112048 #1C3779 #284DAB #3E68D2 #708FDE

Accessibility & contrast

On white

7.66

#284DAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#284DAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284DAB

7.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284DAB	#FFFFFF	#000000	##FFFFFF
##284DAB	1.00	7.66	2.74	7.66
#FFFFFF	7.66	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AAE

Deuteranopia (green-blind)

#004DA9

Tritanopia (blue-blind)

#006474

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #284dab;
/* rgb */ color: rgb(40, 77, 171);
/* oklch */ color: oklch(45.1% 0.157 264.6);

Tailwind

colors: {
  custom: {
    50: '#767ec5',
    500: '#284dab',
    950: '#000000',
  },
}

SCSS

$custom: #284dab;
$custom-light: #767ec5;
$custom-dark: #000000;

JSON

{
  "hex": "#284dab",
  "rgb": {
    "r": 40,
    "g": 77,
    "b": 171
  },
  "hsl": {
    "h": 223.053,
    "s": 62.085,
    "l": 41.373
  },
  "oklch": {
    "l": 0.45069,
    "c": 0.15686,
    "h": 264.6
  },
  "luminance": 0.08699
}

Semantic roles & 50–950 ramp

primary

#284DAB

secondary

#C4AB6A

accent

#B743E5

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #284DAB

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

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