#284DA7#284DA7

#284DA7 is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.8% C 0.151 H 264.3°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#284DA7
RGB	rgb(40, 77, 167)
HSL	hsl(223, 61%, 41%)
HSV	hsv(223, 76%, 65%)
CMYK	cmyk(76%, 53.9%, 0%, 34.5%)
CIE-LAB	lab(35.10, 19.67, -52.27)
CIE-LCH	lch(35.10, 55.85, 290.62°)
OKLab	oklab(44.75% -0.0151 -0.1506)
OKLCH	oklch(44.75% 0.151 264.3)
XYZ	xyz(10.5015, 8.5477, 37.6481)
Luminance	0.0855 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284DA7 #A78228

analogous

#288CA7 #284DA7 #4328A7

triadic

#284DA7 #A7284D #4DA728

tetradic

#284DA7 #A7288C #A78228 #28A743

square

#284DA7 #A7288C #A78228 #28A743

split-complementary

#284DA7 #A74328 #8CA728

monochromatic

#101F44 #1C3676 #284DA7 #3C67D0 #6D8EDC

Accessibility & contrast

On white

7.75

#284DA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#284DA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284DA7

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284DA7	#FFFFFF	#000000	##FFFFFF
##284DA7	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0759AA

Deuteranopia (green-blind)

#004DA5

Tritanopia (blue-blind)

#006372

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #284da7;
/* rgb */ color: rgb(40, 77, 167);
/* oklch */ color: oklch(44.8% 0.151 264.3);

Tailwind

colors: {
  custom: {
    50: '#757ec2',
    500: '#284da7',
    950: '#000000',
  },
}

SCSS

$custom: #284da7;
$custom-light: #757ec2;
$custom-dark: #000000;

JSON

{
  "hex": "#284da7",
  "rgb": {
    "r": 40,
    "g": 77,
    "b": 167
  },
  "hsl": {
    "h": 222.52,
    "s": 61.353,
    "l": 40.588
  },
  "oklch": {
    "l": 0.4475,
    "c": 0.15132,
    "h": 264.3
  },
  "luminance": 0.08549
}

Semantic roles & 50–950 ramp

primary

#284DA7

secondary

#C3A868

accent

#B643E4

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #284DA7

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

Preview Lab → · Contrast checker → · Palette generator →