#1C1FB3#1C1FB3

#1C1FB3 is a dark, highly saturated blue. Relative luminance 0.045; OKLCH L 37.7% C 0.219 H 268.7°. Best body text is #FFFFFF at 11.07:1 contrast (WCAG AA passes).

Color values

HEX	#1C1FB3
RGB	rgb(28, 31, 179)
HSL	hsl(239, 73%, 41%)
HSV	hsv(239, 84%, 70%)
CMYK	cmyk(84.4%, 82.7%, 0%, 29.8%)
CIE-LAB	lab(25.20, 51.17, -75.73)
CIE-LCH	lch(25.20, 91.40, 304.05°)
OKLab	oklab(37.74% -0.0049 -0.2193)
OKLCH	oklch(37.74% 0.219 268.7)
XYZ	xyz(9.1028, 4.4804, 43.0241)
Luminance	0.0448 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C1FB3 #B3B01C

analogous

#1C6AB3 #1C1FB3 #641CB3

triadic

#1C1FB3 #B31C1F #1FB31C

tetradic

#1C1FB3 #B31C6A #B3B01C #1CB364

square

#1C1FB3 #B31C6A #B3B01C #1CB364

split-complementary

#1C1FB3 #B3641C #6AB31C

monochromatic

#0B0D49 #14167E #1C1FB3 #2E31DE #6365E7

Accessibility & contrast

On white

11.07

#1C1FB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#1C1FB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C1FB3

11.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C1FB3	#FFFFFF	#000000	##FFFFFF
##1C1FB3	1.00	11.07	1.90	11.07
#FFFFFF	11.07	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043B7

Deuteranopia (green-blind)

#0034B1

Tritanopia (blue-blind)

#004F6B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1c1fb3;
/* rgb */ color: rgb(28, 31, 179);
/* oklch */ color: oklch(37.7% 0.219 268.7);

Tailwind

colors: {
  custom: {
    50: '#785fcb',
    500: '#1c1fb3',
    950: '#000000',
  },
}

SCSS

$custom: #1c1fb3;
$custom-light: #785fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c1fb3",
  "rgb": {
    "r": 28,
    "g": 31,
    "b": 179
  },
  "hsl": {
    "h": 238.808,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.3774,
    "c": 0.21935,
    "h": 268.7
  },
  "luminance": 0.04482
}

Semantic roles & 50–950 ramp

primary

#1C1FB3

secondary

#CBC95F

accent

#EC38F0

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0514

muted

#7C7982

Preview Lab

Preview with #1C1FB3

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

Preview Lab → · Contrast checker → · Palette generator →