#284EAF#284EAF

#284EAF is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.6% C 0.161 H 264.6°. Best body text is #FFFFFF at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#284EAF
RGB	rgb(40, 78, 175)
HSL	hsl(223, 63%, 42%)
HSV	hsv(223, 77%, 69%)
CMYK	cmyk(77.1%, 55.4%, 0%, 31.4%)
CIE-LAB	lab(35.97, 22.09, -55.62)
CIE-LCH	lch(35.97, 59.84, 291.66°)
OKLab	oklab(45.6% -0.0152 -0.1604)
OKLCH	oklch(45.6% 0.161 264.6)
XYZ	xyz(11.3346, 8.9938, 41.6877)
Luminance	0.0900 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284EAF #AF8928

analogous

#2892AF #284EAF #4528AF

triadic

#284EAF #AF284E #4EAF28

tetradic

#284EAF #AF2892 #AF8928 #28AF45

square

#284EAF #AF2892 #AF8928 #28AF45

split-complementary

#284EAF #AF4528 #92AF28

monochromatic

#11224B #1D387D #284EAF #416AD4 #7391DF

Accessibility & contrast

On white

7.50

#284EAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#284EAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284EAF

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284EAF	#FFFFFF	#000000	##FFFFFF
##284EAF	1.00	7.50	2.80	7.50
#FFFFFF	7.50	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BB2

Deuteranopia (green-blind)

#004FAD

Tritanopia (blue-blind)

#006677

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #284eaf;
/* rgb */ color: rgb(40, 78, 175);
/* oklch */ color: oklch(45.6% 0.161 264.6);

Tailwind

colors: {
  custom: {
    50: '#777fc8',
    500: '#284eaf',
    950: '#000000',
  },
}

SCSS

$custom: #284eaf;
$custom-light: #777fc8;
$custom-dark: #000000;

JSON

{
  "hex": "#284eaf",
  "rgb": {
    "r": 40,
    "g": 78,
    "b": 175
  },
  "hsl": {
    "h": 223.111,
    "s": 62.791,
    "l": 42.157
  },
  "oklch": {
    "l": 0.45599,
    "c": 0.16111,
    "h": 264.6
  },
  "luminance": 0.08995
}

Semantic roles & 50–950 ramp

primary

#284EAF

secondary

#C6AD6D

accent

#B842E6

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #284EAF

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

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