#1C1CB3#1C1CB3

#1C1CB3 is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.4% C 0.222 H 268.8°. Best body text is #FFFFFF at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#1C1CB3
RGB	rgb(28, 28, 179)
HSL	hsl(240, 73%, 41%)
HSV	hsv(240, 84%, 70%)
CMYK	cmyk(84.4%, 84.4%, 0%, 29.8%)
CIE-LAB	lab(24.74, 52.54, -76.50)
CIE-LCH	lch(24.74, 92.80, 304.48°)
OKLab	oklab(37.42% -0.0045 -0.2214)
OKLCH	oklch(37.42% 0.222 268.8)
XYZ	xyz(9.0280, 4.3310, 42.9992)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C1CB3 #B3B31C

analogous

#1C67B3 #1C1CB3 #671CB3

triadic

#1C1CB3 #B31C1C #1CB31C

tetradic

#1C1CB3 #B31C67 #B3B31C #1CB367

square

#1C1CB3 #B31C67 #B3B31C #1CB367

split-complementary

#1C1CB3 #B3671C #67B31C

monochromatic

#0B0B49 #14147E #1C1CB3 #2E2EDE #6363E7

Accessibility & contrast

On white

11.25

#1C1CB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1C1CB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C1CB3

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C1CB3	#FFFFFF	#000000	##FFFFFF
##1C1CB3	1.00	11.25	1.87	11.25
#FFFFFF	11.25	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B7

Deuteranopia (green-blind)

#0032B1

Tritanopia (blue-blind)

#004E6A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1c1cb3;
/* rgb */ color: rgb(28, 28, 179);
/* oklch */ color: oklch(37.4% 0.222 268.8);

Tailwind

colors: {
  custom: {
    50: '#795dcb',
    500: '#1c1cb3',
    950: '#000000',
  },
}

SCSS

$custom: #1c1cb3;
$custom-light: #795dcb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c1cb3",
  "rgb": {
    "r": 28,
    "g": 28,
    "b": 179
  },
  "hsl": {
    "h": 240,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.37419,
    "c": 0.2215,
    "h": 268.8
  },
  "luminance": 0.04332
}

Semantic roles & 50–950 ramp

primary

#1C1CB3

secondary

#CBCB5F

accent

#F038F0

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0514

muted

#7C7982

Preview Lab

Preview with #1C1CB3

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

Preview Lab → · Contrast checker → · Palette generator →