#284BA0#284BA0

#284BA0 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 43.8% C 0.144 H 264.4°. Best body text is #FFFFFF at 8.06:1 contrast (WCAG AA passes).

Color values

HEX	#284BA0
RGB	rgb(40, 75, 160)
HSL	hsl(223, 60%, 39%)
HSV	hsv(223, 75%, 63%)
CMYK	cmyk(75%, 53.1%, 0%, 37.3%)
CIE-LAB	lab(34.03, 18.31, -49.82)
CIE-LCH	lch(34.03, 53.07, 290.18°)
OKLab	oklab(43.77% -0.0142 -0.1434)
OKLCH	oklch(43.77% 0.144 264.4)
XYZ	xyz(9.7341, 8.0203, 34.2859)
Luminance	0.0802 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284BA0 #A07D28

analogous

#2887A0 #284BA0 #4128A0

triadic

#284BA0 #A0284B #4BA028

tetradic

#284BA0 #A02887 #A07D28 #28A041

square

#284BA0 #A02887 #A07D28 #28A041

split-complementary

#284BA0 #A04128 #87A028

monochromatic

#101D3E #1C346F #284BA0 #3864CD #698AD9

Accessibility & contrast

On white

8.06

#284BA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#284BA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284BA0

8.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284BA0	#FFFFFF	#000000	##FFFFFF
##284BA0	1.00	8.06	2.60	8.06
#FFFFFF	8.06	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1056A3

Deuteranopia (green-blind)

#004B9E

Tritanopia (blue-blind)

#00606E

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #284ba0;
/* rgb */ color: rgb(40, 75, 160);
/* oklch */ color: oklch(43.8% 0.144 264.4);

Tailwind

colors: {
  custom: {
    50: '#737cbd',
    500: '#284ba0',
    950: '#000000',
  },
}

SCSS

$custom: #284ba0;
$custom-light: #737cbd;
$custom-dark: #000000;

JSON

{
  "hex": "#284ba0",
  "rgb": {
    "r": 40,
    "g": 75,
    "b": 160
  },
  "hsl": {
    "h": 222.5,
    "s": 60,
    "l": 39.216
  },
  "oklch": {
    "l": 0.43773,
    "c": 0.14407,
    "h": 264.4
  },
  "luminance": 0.08021
}

Semantic roles & 50–950 ramp

primary

#284BA0

secondary

#C0A564

accent

#B545E3

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #284BA0

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

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