#281E9B#281E9B

#281E9B is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.4% C 0.189 H 274.4°. Best body text is #FFFFFF at 12.01:1 contrast (WCAG AA passes).

Color values

HEX	#281E9B
RGB	rgb(40, 30, 155)
HSL	hsl(245, 68%, 36%)
HSV	hsv(245, 81%, 61%)
CMYK	cmyk(74.2%, 80.6%, 0%, 39.2%)
CIE-LAB	lab(22.81, 44.79, -65.14)
CIE-LCH	lch(22.81, 79.06, 304.51°)
OKLab	oklab(35.43% 0.0145 -0.1884)
OKLCH	oklch(35.43% 0.189 274.4)
XYZ	xyz(7.2538, 3.7455, 31.3447)
Luminance	0.0375 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281E9B #919B1E

analogous

#1E539B #281E9B #671E9B

triadic

#281E9B #9B281E #1E9B28

tetradic

#281E9B #9B1E53 #919B1E #1E9B67

square

#281E9B #9B1E53 #919B1E #1E9B67

split-complementary

#281E9B #9B671E #539B1E

monochromatic

#0E0A34 #1B1468 #281E9B #3528CE #6055DE

Accessibility & contrast

On white

12.01

#281E9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#281E9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281E9B

12.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281E9B	#FFFFFF	#000000	##FFFFFF
##281E9B	1.00	12.01	1.75	12.01
#FFFFFF	12.01	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C9E

Deuteranopia (green-blind)

#003199

Tritanopia (blue-blind)

#00455D

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #281e9b;
/* rgb */ color: rgb(40, 30, 155);
/* oklch */ color: oklch(35.4% 0.189 274.4);

Tailwind

colors: {
  custom: {
    50: '#765dba',
    500: '#281e9b',
    950: '#000000',
  },
}

SCSS

$custom: #281e9b;
$custom-light: #765dba;
$custom-dark: #000000;

JSON

{
  "hex": "#281e9b",
  "rgb": {
    "r": 40,
    "g": 30,
    "b": 155
  },
  "hsl": {
    "h": 244.8,
    "s": 67.568,
    "l": 36.275
  },
  "oklch": {
    "l": 0.35427,
    "c": 0.18896,
    "h": 274.4
  },
  "luminance": 0.03746
}

Semantic roles & 50–950 ramp

primary

#281E9B

secondary

#B9C253

accent

#EA3DDD

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #281E9B

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

Preview Lab → · Contrast checker → · Palette generator →