#1B217D#1B217D

#1B217D is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.7% C 0.152 H 271.2°. Best body text is #FFFFFF at 13.46:1 contrast (WCAG AA passes).

Color values

HEX	#1B217D
RGB	rgb(27, 33, 125)
HSL	hsl(236, 64%, 30%)
HSV	hsv(236, 78%, 49%)
CMYK	cmyk(78.4%, 73.6%, 0%, 51%)
CIE-LAB	lab(19.23, 31.63, -52.36)
CIE-LCH	lch(19.23, 61.17, 301.13°)
OKLab	oklab(31.68% 0.0031 -0.1516)
OKLCH	oklch(31.68% 0.152 271.2)
XYZ	xyz(4.6963, 2.8009, 19.6912)
Luminance	0.0280 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B217D #7D771B

analogous

#1B527D #1B217D #461B7D

triadic

#1B217D #7D1B21 #217D1B

tetradic

#1B217D #7D1B52 #7D771B #1B7D46

square

#1B217D #7D1B52 #7D771B #1B7D46

split-complementary

#1B217D #7D461B #527D1B

monochromatic

#050719 #10144B #1B217D #262EAF #3D47D5

Accessibility & contrast

On white

13.46

#1B217D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B217D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B217D

13.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B217D	#FFFFFF	#000000	##FFFFFF
##1B217D	1.00	13.46	1.56	13.46
#FFFFFF	13.46	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003380

Deuteranopia (green-blind)

#002A7B

Tritanopia (blue-blind)

#003B4C

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b217d;
/* rgb */ color: rgb(27, 33, 125);
/* oklch */ color: oklch(31.7% 0.152 271.2);

Tailwind

colors: {
  custom: {
    50: '#695da4',
    500: '#1b217d',
    950: '#000000',
  },
}

SCSS

$custom: #1b217d;
$custom-light: #695da4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b217d",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 125
  },
  "hsl": {
    "h": 236.327,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.31681,
    "c": 0.1516,
    "h": 271.2
  },
  "luminance": 0.02801
}

Semantic roles & 50–950 ramp

primary

#1B217D

secondary

#B1AA43

accent

#DD40E7

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1B217D

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

Preview Lab → · Contrast checker → · Palette generator →