#281A7C#281A7C

#281A7C is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.4% C 0.154 H 279.2°. Best body text is #FFFFFF at 13.73:1 contrast (WCAG AA passes).

Color values

HEX	#281A7C
RGB	rgb(40, 26, 124)
HSL	hsl(249, 65%, 29%)
HSV	hsv(249, 79%, 49%)
CMYK	cmyk(67.7%, 79%, 0%, 51.4%)
CIE-LAB	lab(18.56, 36.89, -52.79)
CIE-LCH	lch(18.56, 64.40, 304.94°)
OKLab	oklab(31.42% 0.0246 -0.1524)
OKLCH	oklch(31.42% 0.154 279.2)
XYZ	xyz(4.8814, 2.6447, 19.3181)
Luminance	0.0265 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281A7C #6E7C1A

analogous

#1A3D7C #281A7C #591A7C

triadic

#281A7C #7C281A #1A7C28

tetradic

#281A7C #7C1A3D #6E7C1A #1A7C59

square

#281A7C #7C1A3D #6E7C1A #1A7C59

split-complementary

#281A7C #7C591A #3D7C1A

monochromatic

#080519 #180F49 #281A7C #3825AF #513BD6

Accessibility & contrast

On white

13.73

#281A7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#281A7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281A7C

13.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281A7C	#FFFFFF	#000000	##FFFFFF
##281A7C	1.00	13.73	1.53	13.73
#FFFFFF	13.73	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317F

Deuteranopia (green-blind)

#00297A

Tritanopia (blue-blind)

#00374A

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #281a7c;
/* rgb */ color: rgb(40, 26, 124);
/* oklch */ color: oklch(31.4% 0.154 279.2);

Tailwind

colors: {
  custom: {
    50: '#6f59a3',
    500: '#281a7c',
    950: '#000000',
  },
}

SCSS

$custom: #281a7c;
$custom-light: #6f59a3;
$custom-dark: #000000;

JSON

{
  "hex": "#281a7c",
  "rgb": {
    "r": 40,
    "g": 26,
    "b": 124
  },
  "hsl": {
    "h": 248.571,
    "s": 65.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.31419,
    "c": 0.15442,
    "h": 279.2
  },
  "luminance": 0.02645
}

Semantic roles & 50–950 ramp

primary

#281A7C

secondary

#A0B042

accent

#E840D0

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #281A7C

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

Preview Lab → · Contrast checker → · Palette generator →