#1B217F#1B217F

#1B217F is a dark, vivid blue. Relative luminance 0.029; OKLCH L 31.9% C 0.154 H 271.0°. Best body text is #FFFFFF at 13.37:1 contrast (WCAG AA passes).

Color values

HEX	#1B217F
RGB	rgb(27, 33, 127)
HSL	hsl(236, 65%, 30%)
HSV	hsv(236, 79%, 50%)
CMYK	cmyk(78.7%, 74%, 0%, 50.2%)
CIE-LAB	lab(19.44, 32.37, -53.28)
CIE-LCH	lch(19.44, 62.34, 301.28°)
OKLab	oklab(31.9% 0.0028 -0.1542)
OKLCH	oklch(31.9% 0.154 271)
XYZ	xyz(4.8253, 2.8525, 20.3708)
Luminance	0.0285 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B217F #7F791B

analogous

#1B537F #1B217F #471B7F

triadic

#1B217F #7F1B21 #217F1B

tetradic

#1B217F #7F1B53 #7F791B #1B7F47

square

#1B217F #7F1B53 #7F791B #1B7F47

split-complementary

#1B217F #7F471B #537F1B

monochromatic

#06071A #10144D #1B217F #262EB1 #3E47D6

Accessibility & contrast

On white

13.37

#1B217F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1B217F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B217F

13.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B217F	#FFFFFF	#000000	##FFFFFF
##1B217F	1.00	13.37	1.57	13.37
#FFFFFF	13.37	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003482

Deuteranopia (green-blind)

#002A7D

Tritanopia (blue-blind)

#003C4D

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b217f;
/* rgb */ color: rgb(27, 33, 127);
/* oklch */ color: oklch(31.9% 0.154 271.0);

Tailwind

colors: {
  custom: {
    50: '#6a5da5',
    500: '#1b217f',
    950: '#000000',
  },
}

SCSS

$custom: #1b217f;
$custom-light: #6a5da5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b217f",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 127
  },
  "hsl": {
    "h": 236.4,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.319,
    "c": 0.15426,
    "h": 271
  },
  "luminance": 0.02853
}

Semantic roles & 50–950 ramp

primary

#1B217F

secondary

#B3AC43

accent

#DE40E8

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #1B217F

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

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