#281AB4#281AB4

#281AB4 is a dark, highly saturated blue. Relative luminance 0.045; OKLCH L 38.0% C 0.221 H 272.3°. Best body text is #FFFFFF at 11.07:1 contrast (WCAG AA passes).

Color values

HEX	#281AB4
RGB	rgb(40, 26, 180)
HSL	hsl(245, 75%, 40%)
HSV	hsv(245, 86%, 71%)
CMYK	cmyk(77.8%, 85.6%, 0%, 29.4%)
CIE-LAB	lab(25.21, 54.24, -76.29)
CIE-LCH	lch(25.21, 93.61, 305.41°)
OKLab	oklab(37.95% 0.0091 -0.2206)
OKLCH	oklch(37.95% 0.221 272.3)
XYZ	xyz(9.4799, 4.4842, 43.5371)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281AB4 #A6B41A

analogous

#1A59B4 #281AB4 #751AB4

triadic

#281AB4 #B4281A #1AB428

tetradic

#281AB4 #B41A59 #A6B41A #1AB475

square

#281AB4 #B41A59 #A6B41A #1AB475

split-complementary

#281AB4 #B4751A #59B41A

monochromatic

#100B49 #1C127F #281AB4 #3B2BE0 #6D60E8

Accessibility & contrast

On white

11.07

#281AB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#281AB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281AB4

11.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281AB4	#FFFFFF	#000000	##FFFFFF
##281AB4	1.00	11.07	1.90	11.07
#FFFFFF	11.07	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043B8

Deuteranopia (green-blind)

#0034B1

Tritanopia (blue-blind)

#004E6B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #281ab4;
/* rgb */ color: rgb(40, 26, 180);
/* oklch */ color: oklch(38.0% 0.221 272.3);

Tailwind

colors: {
  custom: {
    50: '#7c5dcc',
    500: '#281ab4',
    950: '#000000',
  },
}

SCSS

$custom: #281ab4;
$custom-light: #7c5dcc;
$custom-dark: #000000;

JSON

{
  "hex": "#281ab4",
  "rgb": {
    "r": 40,
    "g": 26,
    "b": 180
  },
  "hsl": {
    "h": 245.455,
    "s": 74.757,
    "l": 40.392
  },
  "oklch": {
    "l": 0.37954,
    "c": 0.22082,
    "h": 272.3
  },
  "luminance": 0.04485
}

Semantic roles & 50–950 ramp

primary

#281AB4

secondary

#C2CC5D

accent

#F136E0

background

#F8F5FC

surface

#F0E9F9

border

#CBC5D2

text

#0C0514

muted

#7D7982

Preview Lab

Preview with #281AB4

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

Preview Lab → · Contrast checker → · Palette generator →