#271FAB#271FAB

#271FAB is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.3% C 0.207 H 272.5°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#271FAB
RGB	rgb(39, 31, 171)
HSL	hsl(243, 69%, 40%)
HSV	hsv(243, 82%, 67%)
CMYK	cmyk(77.2%, 81.9%, 0%, 32.9%)
CIE-LAB	lab(24.80, 49.26, -71.58)
CIE-LCH	lch(24.80, 86.89, 304.54°)
OKLab	oklab(37.34% 0.0089 -0.2071)
OKLCH	oklch(37.34% 0.207 272.5)
XYZ	xyz(8.6749, 4.3506, 38.9027)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#271FAB #A3AB1F

analogous

#1F5DAB #271FAB #6D1FAB

triadic

#271FAB #AB271F #1FAB27

tetradic

#271FAB #AB1F5D #A3AB1F #1FAB6D

square

#271FAB #AB1F5D #A3AB1F #1FAB6D

split-complementary

#271FAB #AB6D1F #5DAB1F

monochromatic

#0F0C43 #1B1677 #271FAB #382ED9 #6962E3

Accessibility & contrast

On white

11.23

#271FAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#271FAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #271FAB

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##271FAB	#FFFFFF	#000000	##FFFFFF
##271FAB	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041AF

Deuteranopia (green-blind)

#0034A9

Tritanopia (blue-blind)

#004B66

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #271fab;
/* rgb */ color: rgb(39, 31, 171);
/* oklch */ color: oklch(37.3% 0.207 272.5);

Tailwind

colors: {
  custom: {
    50: '#795fc5',
    500: '#271fab',
    950: '#000000',
  },
}

SCSS

$custom: #271fab;
$custom-light: #795fc5;
$custom-dark: #000000;

JSON

{
  "hex": "#271fab",
  "rgb": {
    "r": 39,
    "g": 31,
    "b": 171
  },
  "hsl": {
    "h": 243.429,
    "s": 69.307,
    "l": 39.608
  },
  "oklch": {
    "l": 0.37338,
    "c": 0.20729,
    "h": 272.5
  },
  "luminance": 0.04352
}

Semantic roles & 50–950 ramp

primary

#271FAB

secondary

#C1C75E

accent

#EC3CE2

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #271FAB

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

Preview Lab → · Contrast checker → · Palette generator →