#1B217C#1B217C

#1B217C is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.6% C 0.150 H 271.2°. Best body text is #FFFFFF at 13.50:1 contrast (WCAG AA passes).

Color values

HEX	#1B217C
RGB	rgb(27, 33, 124)
HSL	hsl(236, 64%, 30%)
HSV	hsv(236, 78%, 49%)
CMYK	cmyk(78.2%, 73.4%, 0%, 51.4%)
CIE-LAB	lab(19.12, 31.26, -51.90)
CIE-LCH	lch(19.12, 60.59, 301.06°)
OKLab	oklab(31.57% 0.0032 -0.1502)
OKLCH	oklch(31.57% 0.15 271.2)
XYZ	xyz(4.6327, 2.7755, 19.3564)
Luminance	0.0278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B217C #7C761B

analogous

#1B517C #1B217C #461B7C

triadic

#1B217C #7C1B21 #217C1B

tetradic

#1B217C #7C1B51 #7C761B #1B7C46

square

#1B217C #7C1B51 #7C761B #1B7C46

split-complementary

#1B217C #7C461B #517C1B

monochromatic

#050719 #10144A #1B217C #262EAE #3D46D5

Accessibility & contrast

On white

13.50

#1B217C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B217C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B217C

13.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B217C	#FFFFFF	#000000	##FFFFFF
##1B217C	1.00	13.50	1.56	13.50
#FFFFFF	13.50	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00337F

Deuteranopia (green-blind)

#002A7A

Tritanopia (blue-blind)

#003B4C

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b217c;
/* rgb */ color: rgb(27, 33, 124);
/* oklch */ color: oklch(31.6% 0.150 271.2);

Tailwind

colors: {
  custom: {
    50: '#695da3',
    500: '#1b217c',
    950: '#000000',
  },
}

SCSS

$custom: #1b217c;
$custom-light: #695da3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b217c",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 124
  },
  "hsl": {
    "h": 236.289,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.31572,
    "c": 0.15026,
    "h": 271.2
  },
  "luminance": 0.02776
}

Semantic roles & 50–950 ramp

primary

#1B217C

secondary

#B0A943

accent

#DD41E7

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1B217C

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

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