#284BA5#284BA5

#284BA5 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.2% C 0.151 H 264.8°. Best body text is #FFFFFF at 7.95:1 contrast (WCAG AA passes).

Color values

HEX	#284BA5
RGB	rgb(40, 75, 165)
HSL	hsl(223, 61%, 40%)
HSV	hsv(223, 76%, 65%)
CMYK	cmyk(75.8%, 54.5%, 0%, 35.3%)
CIE-LAB	lab(34.39, 20.24, -52.22)
CIE-LCH	lch(34.39, 56.01, 291.19°)
OKLab	oklab(44.17% -0.0137 -0.1504)
OKLCH	oklch(44.17% 0.151 264.8)
XYZ	xyz(10.1803, 8.1988, 36.6360)
Luminance	0.0820 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284BA5 #A58228

analogous

#2889A5 #284BA5 #4328A5

triadic

#284BA5 #A5284B #4BA528

tetradic

#284BA5 #A52889 #A58228 #28A543

square

#284BA5 #A52889 #A58228 #28A543

split-complementary

#284BA5 #A54328 #89A528

monochromatic

#101E42 #1C3574 #284BA5 #3B64CF #6C8BDB

Accessibility & contrast

On white

7.95

#284BA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#284BA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284BA5

7.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284BA5	#FFFFFF	#000000	##FFFFFF
##284BA5	1.00	7.95	2.64	7.95
#FFFFFF	7.95	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0157A8

Deuteranopia (green-blind)

#004BA3

Tritanopia (blue-blind)

#006170

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #284ba5;
/* rgb */ color: rgb(40, 75, 165);
/* oklch */ color: oklch(44.2% 0.151 264.8);

Tailwind

colors: {
  custom: {
    50: '#747cc0',
    500: '#284ba5',
    950: '#000000',
  },
}

SCSS

$custom: #284ba5;
$custom-light: #747cc0;
$custom-dark: #000000;

JSON

{
  "hex": "#284ba5",
  "rgb": {
    "r": 40,
    "g": 75,
    "b": 165
  },
  "hsl": {
    "h": 223.2,
    "s": 60.976,
    "l": 40.196
  },
  "oklch": {
    "l": 0.44169,
    "c": 0.15107,
    "h": 264.8
  },
  "luminance": 0.082
}

Semantic roles & 50–950 ramp

primary

#284BA5

secondary

#C2A867

accent

#B744E4

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #284BA5

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

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