#284CA6#284CA6

#284CA6 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.5% C 0.151 H 264.5°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#284CA6
RGB	rgb(40, 76, 166)
HSL	hsl(223, 61%, 40%)
HSV	hsv(223, 76%, 65%)
CMYK	cmyk(75.9%, 54.2%, 0%, 34.9%)
CIE-LAB	lab(34.75, 19.96, -52.25)
CIE-LCH	lch(34.75, 55.93, 290.90°)
OKLab	oklab(44.46% -0.0144 -0.1505)
OKLCH	oklch(44.46% 0.151 264.5)
XYZ	xyz(10.3400, 8.3720, 37.1400)
Luminance	0.0837 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284CA6 #A68228

analogous

#288BA6 #284CA6 #4328A6

triadic

#284CA6 #A6284C #4CA628

tetradic

#284CA6 #A6288B #A68228 #28A643

square

#284CA6 #A6288B #A68228 #28A643

split-complementary

#284CA6 #A64328 #8BA628

monochromatic

#101F43 #1C3575 #284CA6 #3B66D0 #6D8CDC

Accessibility & contrast

On white

7.85

#284CA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#284CA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284CA6

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284CA6	#FFFFFF	#000000	##FFFFFF
##284CA6	1.00	7.85	2.67	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0458A9

Deuteranopia (green-blind)

#004CA4

Tritanopia (blue-blind)

#006271

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #284ca6;
/* rgb */ color: rgb(40, 76, 166);
/* oklch */ color: oklch(44.5% 0.151 264.5);

Tailwind

colors: {
  custom: {
    50: '#757dc1',
    500: '#284ca6',
    950: '#000000',
  },
}

SCSS

$custom: #284ca6;
$custom-light: #757dc1;
$custom-dark: #000000;

JSON

{
  "hex": "#284ca6",
  "rgb": {
    "r": 40,
    "g": 76,
    "b": 166
  },
  "hsl": {
    "h": 222.857,
    "s": 61.165,
    "l": 40.392
  },
  "oklch": {
    "l": 0.44459,
    "c": 0.1512,
    "h": 264.5
  },
  "luminance": 0.08373
}

Semantic roles & 50–950 ramp

primary

#284CA6

secondary

#C2A867

accent

#B644E4

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #284CA6

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

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