#1C1DB3#1C1DB3

#1C1DB3 is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.5% C 0.221 H 268.8°. Best body text is #FFFFFF at 11.19:1 contrast (WCAG AA passes).

Color values

HEX	#1C1DB3
RGB	rgb(28, 29, 179)
HSL	hsl(240, 73%, 41%)
HSV	hsv(240, 84%, 70%)
CMYK	cmyk(84.4%, 83.8%, 0%, 29.8%)
CIE-LAB	lab(24.89, 52.10, -76.25)
CIE-LCH	lch(24.89, 92.35, 304.34°)
OKLab	oklab(37.52% -0.0046 -0.2207)
OKLCH	oklch(37.52% 0.221 268.8)
XYZ	xyz(9.0522, 4.3792, 43.0073)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C1DB3 #B3B21C

analogous

#1C68B3 #1C1DB3 #671CB3

triadic

#1C1DB3 #B31C1D #1DB31C

tetradic

#1C1DB3 #B31C68 #B3B21C #1CB367

square

#1C1DB3 #B31C68 #B3B21C #1CB367

split-complementary

#1C1DB3 #B3671C #68B31C

monochromatic

#0B0C49 #14147E #1C1DB3 #2E2FDE #6364E7

Accessibility & contrast

On white

11.19

#1C1DB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1C1DB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C1DB3

11.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C1DB3	#FFFFFF	#000000	##FFFFFF
##1C1DB3	1.00	11.19	1.88	11.19
#FFFFFF	11.19	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043B7

Deuteranopia (green-blind)

#0033B1

Tritanopia (blue-blind)

#004E6A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1c1db3;
/* rgb */ color: rgb(28, 29, 179);
/* oklch */ color: oklch(37.5% 0.221 268.8);

Tailwind

colors: {
  custom: {
    50: '#785ecb',
    500: '#1c1db3',
    950: '#000000',
  },
}

SCSS

$custom: #1c1db3;
$custom-light: #785ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c1db3",
  "rgb": {
    "r": 28,
    "g": 29,
    "b": 179
  },
  "hsl": {
    "h": 239.603,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.37523,
    "c": 0.2208,
    "h": 268.8
  },
  "luminance": 0.0438
}

Semantic roles & 50–950 ramp

primary

#1C1DB3

secondary

#CBCB5F

accent

#EE38F0

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0514

muted

#7C7982

Preview Lab

Preview with #1C1DB3

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

Preview Lab → · Contrast checker → · Palette generator →