#284BBA#284BBA

#284BBA is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.9% C 0.180 H 266.0°. Best body text is #FFFFFF at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#284BBA
RGB	rgb(40, 75, 186)
HSL	hsl(226, 65%, 44%)
HSV	hsv(226, 78%, 73%)
CMYK	cmyk(78.5%, 59.7%, 0%, 27.1%)
CIE-LAB	lab(36.04, 28.28, -62.01)
CIE-LCH	lch(36.04, 68.15, 294.51°)
OKLab	oklab(45.92% -0.0126 -0.1792)
OKLCH	oklch(45.92% 0.18 266)
XYZ	xyz(12.2510, 9.0270, 47.5416)
Luminance	0.0903 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284BBA #BA9728

analogous

#2894BA #284BBA #4E28BA

triadic

#284BBA #BA284B #4BBA28

tetradic

#284BBA #BA2894 #BA9728 #28BA4E

square

#284BBA #BA2894 #BA9728 #28BA4E

split-complementary

#284BBA #BA4E28 #94BA28

monochromatic

#122255 #1D3788 #284BBA #486AD8 #7A93E2

Accessibility & contrast

On white

7.49

#284BBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#284BBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284BBA

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284BBA	#FFFFFF	#000000	##FFFFFF
##284BBA	1.00	7.49	2.81	7.49
#FFFFFF	7.49	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CBE

Deuteranopia (green-blind)

#004EB8

Tritanopia (blue-blind)

#00677B

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #284bba;
/* rgb */ color: rgb(40, 75, 186);
/* oklch */ color: oklch(45.9% 0.180 266.0);

Tailwind

colors: {
  custom: {
    50: '#797cd0',
    500: '#284bba',
    950: '#000000',
  },
}

SCSS

$custom: #284bba;
$custom-light: #797cd0;
$custom-dark: #000000;

JSON

{
  "hex": "#284bba",
  "rgb": {
    "r": 40,
    "g": 75,
    "b": 186
  },
  "hsl": {
    "h": 225.616,
    "s": 64.602,
    "l": 44.314
  },
  "oklch": {
    "l": 0.45918,
    "c": 0.17965,
    "h": 266
  },
  "luminance": 0.09028
}

Semantic roles & 50–950 ramp

primary

#284BBA

secondary

#CAB673

accent

#BF40E8

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #284BBA

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

Preview Lab → · Contrast checker → · Palette generator →