#283ABB#283ABB

#283ABB is a dark, highly saturated blue. Relative luminance 0.071; OKLCH L 42.9% C 0.201 H 269.1°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#283ABB
RGB	rgb(40, 58, 187)
HSL	hsl(233, 65%, 45%)
HSV	hsv(233, 79%, 73%)
CMYK	cmyk(78.6%, 69%, 0%, 26.7%)
CIE-LAB	lab(31.95, 39.57, -69.30)
CIE-LCH	lch(31.95, 79.79, 299.72°)
OKLab	oklab(42.94% -0.0031 -0.2007)
OKLCH	oklch(42.94% 0.201 269.1)
XYZ	xyz(11.3547, 7.0638, 47.7691)
Luminance	0.0707 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283ABB #BBA928

analogous

#2884BB #283ABB #6028BB

triadic

#283ABB #BB283A #3ABB28

tetradic

#283ABB #BB2884 #BBA928 #28BB60

square

#283ABB #BB2884 #BBA928 #28BB60

split-complementary

#283ABB #BB6028 #84BB28

monochromatic

#121B56 #1D2A89 #283ABB #485AD8 #7B87E3

Accessibility & contrast

On white

8.70

#283ABB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#283ABB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283ABB

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283ABB	#FFFFFF	#000000	##FFFFFF
##283ABB	1.00	8.70	2.41	8.70
#FFFFFF	8.70	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BF

Deuteranopia (green-blind)

#0044B9

Tritanopia (blue-blind)

#005E76

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #283abb;
/* rgb */ color: rgb(40, 58, 187);
/* oklch */ color: oklch(42.9% 0.201 269.1);

Tailwind

colors: {
  custom: {
    50: '#7b70d1',
    500: '#283abb',
    950: '#000000',
  },
}

SCSS

$custom: #283abb;
$custom-light: #7b70d1;
$custom-dark: #000000;

JSON

{
  "hex": "#283abb",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 187
  },
  "hsl": {
    "h": 232.653,
    "s": 64.758,
    "l": 44.51
  },
  "oklch": {
    "l": 0.4294,
    "c": 0.20069,
    "h": 269.1
  },
  "luminance": 0.07065
}

Semantic roles & 50–950 ramp

primary

#283ABB

secondary

#CBC074

accent

#D340E8

background

#F8F6FD

surface

#EFECFA

border

#CAC7D3

text

#0B0714

muted

#7C7A83

Preview Lab

Preview with #283ABB

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

Preview Lab → · Contrast checker → · Palette generator →