#21287C#21287C

#21287C is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.2% C 0.140 H 272.3°. Best body text is #FFFFFF at 12.66:1 contrast (WCAG AA passes).

Color values

HEX	#21287C
RGB	rgb(33, 40, 124)
HSL	hsl(235, 58%, 31%)
HSV	hsv(235, 73%, 49%)
CMYK	cmyk(73.4%, 67.7%, 0%, 51.4%)
CIE-LAB	lab(21.19, 27.33, -48.49)
CIE-LCH	lch(21.19, 55.66, 299.40°)
OKLab	oklab(33.17% 0.0057 -0.1401)
OKLCH	oklch(33.17% 0.14 272.3)
XYZ	xyz(5.0229, 3.2957, 19.4363)
Luminance	0.0330 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21287C #7C7521

analogous

#21557C #21287C #47217C

triadic

#21287C #7C2128 #287C21

tetradic

#21287C #7C2155 #7C7521 #217C47

square

#21287C #7C2155 #7C7521 #217C47

split-complementary

#21287C #7C4721 #557C21

monochromatic

#07091B #14184C #21287C #2E38AC #4953CF

Accessibility & contrast

On white

12.66

#21287C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#21287C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21287C

12.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21287C	#FFFFFF	#000000	##FFFFFF
##21287C	1.00	12.66	1.66	12.66
#FFFFFF	12.66	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00377F

Deuteranopia (green-blind)

#002F7A

Tritanopia (blue-blind)

#003E4E

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #21287c;
/* rgb */ color: rgb(33, 40, 124);
/* oklch */ color: oklch(33.2% 0.140 272.3);

Tailwind

colors: {
  custom: {
    50: '#6a62a3',
    500: '#21287c',
    950: '#000000',
  },
}

SCSS

$custom: #21287c;
$custom-light: #6a62a3;
$custom-dark: #000000;

JSON

{
  "hex": "#21287c",
  "rgb": {
    "r": 33,
    "g": 40,
    "b": 124
  },
  "hsl": {
    "h": 235.385,
    "s": 57.962,
    "l": 30.784
  },
  "oklch": {
    "l": 0.33169,
    "c": 0.14021,
    "h": 272.3
  },
  "luminance": 0.03296
}

Semantic roles & 50–950 ramp

primary

#21287C

secondary

#AFA74A

accent

#D547E1

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #21287C

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

Preview Lab → · Contrast checker → · Palette generator →