#284FAB#284FAB

#284FAB is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.5% C 0.154 H 263.9°. Best body text is #FFFFFF at 7.51:1 contrast (WCAG AA passes).

Color values

HEX	#284FAB
RGB	rgb(40, 79, 171)
HSL	hsl(222, 62%, 41%)
HSV	hsv(222, 77%, 67%)
CMYK	cmyk(76.6%, 53.8%, 0%, 32.9%)
CIE-LAB	lab(35.95, 19.88, -53.28)
CIE-LCH	lch(35.95, 56.87, 290.46°)
OKLab	oklab(45.49% -0.0163 -0.1535)
OKLCH	oklch(45.49% 0.154 263.9)
XYZ	xyz(11.0191, 8.9821, 39.6732)
Luminance	0.0898 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284FAB #AB8428

analogous

#2891AB #284FAB #4328AB

triadic

#284FAB #AB284F #4FAB28

tetradic

#284FAB #AB2891 #AB8428 #28AB43

square

#284FAB #AB2891 #AB8428 #28AB43

split-complementary

#284FAB #AB4328 #91AB28

monochromatic

#112148 #1C3879 #284FAB #3E6AD2 #7091DE

Accessibility & contrast

On white

7.51

#284FAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#284FAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284FAB

7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284FAB	#FFFFFF	#000000	##FFFFFF
##284FAB	1.00	7.51	2.80	7.51
#FFFFFF	7.51	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#075BAE

Deuteranopia (green-blind)

#004FA9

Tritanopia (blue-blind)

#006575

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #284fab;
/* rgb */ color: rgb(40, 79, 171);
/* oklch */ color: oklch(45.5% 0.154 263.9);

Tailwind

colors: {
  custom: {
    50: '#767fc5',
    500: '#284fab',
    950: '#000000',
  },
}

SCSS

$custom: #284fab;
$custom-light: #767fc5;
$custom-dark: #000000;

JSON

{
  "hex": "#284fab",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 171
  },
  "hsl": {
    "h": 222.137,
    "s": 62.085,
    "l": 41.373
  },
  "oklch": {
    "l": 0.45488,
    "c": 0.15435,
    "h": 263.9
  },
  "luminance": 0.08983
}

Semantic roles & 50–950 ramp

primary

#284FAB

secondary

#C4AA6A

accent

#B543E5

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #284FAB

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

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