#1B217E#1B217E

#1B217E is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.8% C 0.153 H 271.1°. Best body text is #FFFFFF at 13.42:1 contrast (WCAG AA passes).

Color values

HEX	#1B217E
RGB	rgb(27, 33, 126)
HSL	hsl(236, 65%, 30%)
HSV	hsv(236, 79%, 49%)
CMYK	cmyk(78.6%, 73.8%, 0%, 50.6%)
CIE-LAB	lab(19.34, 32.00, -52.82)
CIE-LCH	lch(19.34, 61.76, 301.21°)
OKLab	oklab(31.79% 0.0029 -0.1529)
OKLCH	oklch(31.79% 0.153 271.1)
XYZ	xyz(4.7605, 2.8266, 20.0293)
Luminance	0.0283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B217E #7E781B

analogous

#1B527E #1B217E #471B7E

triadic

#1B217E #7E1B21 #217E1B

tetradic

#1B217E #7E1B52 #7E781B #1B7E47

square

#1B217E #7E1B52 #7E781B #1B7E47

split-complementary

#1B217E #7E471B #527E1B

monochromatic

#050719 #10144C #1B217E #262EB0 #3E47D6

Accessibility & contrast

On white

13.42

#1B217E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1B217E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B217E

13.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B217E	#FFFFFF	#000000	##FFFFFF
##1B217E	1.00	13.42	1.57	13.42
#FFFFFF	13.42	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003481

Deuteranopia (green-blind)

#002A7C

Tritanopia (blue-blind)

#003B4D

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b217e;
/* rgb */ color: rgb(27, 33, 126);
/* oklch */ color: oklch(31.8% 0.153 271.1);

Tailwind

colors: {
  custom: {
    50: '#6a5da4',
    500: '#1b217e',
    950: '#000000',
  },
}

SCSS

$custom: #1b217e;
$custom-light: #6a5da4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b217e",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 126
  },
  "hsl": {
    "h": 236.364,
    "s": 64.706,
    "l": 30
  },
  "oklch": {
    "l": 0.3179,
    "c": 0.15294,
    "h": 271.1
  },
  "luminance": 0.02827
}

Semantic roles & 50–950 ramp

primary

#1B217E

secondary

#B2AB43

accent

#DE40E8

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1B217E

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

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