#284DB3#284DB3

#284DB3 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.7% C 0.168 H 265.1°. Best body text is #FFFFFF at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#284DB3
RGB	rgb(40, 77, 179)
HSL	hsl(224, 63%, 43%)
HSV	hsv(224, 78%, 70%)
CMYK	cmyk(77.7%, 57%, 0%, 29.8%)
CIE-LAB	lab(36.01, 24.29, -57.93)
CIE-LCH	lch(36.01, 62.82, 292.75°)
OKLab	oklab(45.72% -0.0142 -0.1672)
OKLCH	oklch(45.72% 0.168 265.1)
XYZ	xyz(11.6628, 9.0122, 43.7639)
Luminance	0.0901 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284DB3 #B38E28

analogous

#2892B3 #284DB3 #4928B3

triadic

#284DB3 #B3284D #4DB328

tetradic

#284DB3 #B32892 #B38E28 #28B349

square

#284DB3 #B32892 #B38E28 #28B349

split-complementary

#284DB3 #B34928 #92B328

monochromatic

#12224F #1D3781 #284DB3 #436AD5 #7592E0

Accessibility & contrast

On white

7.49

#284DB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#284DB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284DB3

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284DB3	#FFFFFF	#000000	##FFFFFF
##284DB3	1.00	7.49	2.80	7.49
#FFFFFF	7.49	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BB6

Deuteranopia (green-blind)

#004FB1

Tritanopia (blue-blind)

#006678

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #284db3;
/* rgb */ color: rgb(40, 77, 179);
/* oklch */ color: oklch(45.7% 0.168 265.1);

Tailwind

colors: {
  custom: {
    50: '#787ecb',
    500: '#284db3',
    950: '#000000',
  },
}

SCSS

$custom: #284db3;
$custom-light: #787ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#284db3",
  "rgb": {
    "r": 40,
    "g": 77,
    "b": 179
  },
  "hsl": {
    "h": 224.029,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.45723,
    "c": 0.1678,
    "h": 265.1
  },
  "luminance": 0.09014
}

Semantic roles & 50–950 ramp

primary

#284DB3

secondary

#C8B06F

accent

#BB41E6

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #284DB3

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

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