#281FD4#281FD4

#281FD4 is a dark, highly saturated blue. Relative luminance 0.062; OKLCH L 42.3% C 0.253 H 270.1°. Best body text is #FFFFFF at 9.39:1 contrast (WCAG AA passes).

Color values

HEX	#281FD4
RGB	rgb(40, 31, 212)
HSL	hsl(243, 74%, 48%)
HSV	hsv(243, 85%, 83%)
CMYK	cmyk(81.1%, 85.4%, 0%, 16.9%)
CIE-LAB	lab(29.87, 61.51, -87.37)
CIE-LCH	lch(29.87, 106.85, 305.15°)
OKLab	oklab(42.28% 0.0003 -0.2528)
OKLCH	oklch(42.28% 0.253 270.1)
XYZ	xyz(13.2447, 6.1830, 62.7700)
Luminance	0.0619 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281FD4 #CBD41F

analogous

#1F71D4 #281FD4 #821FD4

triadic

#281FD4 #D4281F #1FD428

tetradic

#281FD4 #D41F71 #CBD41F #1FD482

square

#281FD4 #D41F71 #CBD41F #1FD482

split-complementary

#281FD4 #D4821F #71D41F

monochromatic

#140F69 #1E179F #281FD4 #534BE5 #8681ED

Accessibility & contrast

On white

9.39

#281FD4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#281FD4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281FD4

9.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281FD4	#FFFFFF	#000000	##FFFFFF
##281FD4	1.00	9.39	2.24	9.39
#FFFFFF	9.39	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FD9

Deuteranopia (green-blind)

#003DD1

Tritanopia (blue-blind)

#005D7E

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #281fd4;
/* rgb */ color: rgb(40, 31, 212);
/* oklch */ color: oklch(42.3% 0.253 270.1);

Tailwind

colors: {
  custom: {
    50: '#8462e3',
    500: '#281fd4',
    950: '#000000',
  },
}

SCSS

$custom: #281fd4;
$custom-light: #8462e3;
$custom-dark: #000000;

JSON

{
  "hex": "#281fd4",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 212
  },
  "hsl": {
    "h": 242.983,
    "s": 74.486,
    "l": 47.647
  },
  "oklch": {
    "l": 0.42276,
    "c": 0.25277,
    "h": 270.1
  },
  "luminance": 0.06185
}

Semantic roles & 50–950 ramp

primary

#281FD4

secondary

#D1D57A

accent

#F137E8

background

#F9F6FE

surface

#F1EBFC

border

#CBC6D5

text

#0D0616

muted

#7E7A84

Preview Lab

Preview with #281FD4

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

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