#284EA7#284EA7

#284EA7 is a dark, vivid blue. Relative luminance 0.087; OKLCH L 45.0% C 0.150 H 263.9°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#284EA7
RGB	rgb(40, 78, 167)
HSL	hsl(222, 61%, 41%)
HSV	hsv(222, 76%, 65%)
CMYK	cmyk(76%, 53.3%, 0%, 34.5%)
CIE-LAB	lab(35.38, 19.00, -51.82)
CIE-LCH	lch(35.38, 55.20, 290.14°)
OKLab	oklab(44.96% -0.0159 -0.1492)
OKLCH	oklch(44.96% 0.15 263.9)
XYZ	xyz(10.5720, 8.6887, 37.6716)
Luminance	0.0869 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284EA7 #A78128

analogous

#288DA7 #284EA7 #4128A7

triadic

#284EA7 #A7284E #4EA728

tetradic

#284EA7 #A7288D #A78128 #28A741

square

#284EA7 #A7288D #A78128 #28A741

split-complementary

#284EA7 #A74128 #8DA728

monochromatic

#102044 #1C3776 #284EA7 #3C68D0 #6D8EDC

Accessibility & contrast

On white

7.67

#284EA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#284EA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284EA7

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284EA7	#FFFFFF	#000000	##FFFFFF
##284EA7	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E59AA

Deuteranopia (green-blind)

#004EA5

Tritanopia (blue-blind)

#006473

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #284ea7;
/* rgb */ color: rgb(40, 78, 167);
/* oklch */ color: oklch(45.0% 0.150 263.9);

Tailwind

colors: {
  custom: {
    50: '#757fc2',
    500: '#284ea7',
    950: '#000000',
  },
}

SCSS

$custom: #284ea7;
$custom-light: #757fc2;
$custom-dark: #000000;

JSON

{
  "hex": "#284ea7",
  "rgb": {
    "r": 40,
    "g": 78,
    "b": 167
  },
  "hsl": {
    "h": 222.047,
    "s": 61.353,
    "l": 40.588
  },
  "oklch": {
    "l": 0.44962,
    "c": 0.15006,
    "h": 263.9
  },
  "luminance": 0.0869
}

Semantic roles & 50–950 ramp

primary

#284EA7

secondary

#C3A868

accent

#B443E4

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #284EA7

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

Preview Lab → · Contrast checker → · Palette generator →