#1C1171#1C1171

#1C1171 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 28.0% C 0.152 H 275.5°. Best body text is #FFFFFF at 15.35:1 contrast (WCAG AA passes).

Color values

HEX	#1C1171
RGB	rgb(28, 17, 113)
HSL	hsl(247, 74%, 25%)
HSV	hsv(247, 85%, 44%)
CMYK	cmyk(75.2%, 85%, 0%, 55.7%)
CIE-LAB	lab(14.62, 36.83, -52.26)
CIE-LCH	lch(14.62, 63.94, 305.18°)
OKLab	oklab(28.04% 0.0144 -0.1511)
OKLCH	oklch(28.04% 0.152 275.5)
XYZ	xyz(3.6590, 1.8397, 15.7818)
Luminance	0.0184 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C1171 #667111

analogous

#113671 #1C1171 #4C1171

triadic

#1C1171 #711C11 #11711C

tetradic

#1C1171 #711136 #667111 #11714C

square

#1C1171 #711136 #667111 #11714C

split-complementary

#1C1171 #714C11 #367111

monochromatic

#07041B #0F093C #1C1171 #2919A6 #3621DB

Accessibility & contrast

On white

15.35

#1C1171 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#1C1171 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C1171

15.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C1171	#FFFFFF	#000000	##FFFFFF
##1C1171	1.00	15.35	1.37	15.35
#FFFFFF	15.35	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002974

Deuteranopia (green-blind)

#00216F

Tritanopia (blue-blind)

#002F42

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1c1171;
/* rgb */ color: rgb(28, 17, 113);
/* oklch */ color: oklch(28.0% 0.152 275.5);

Tailwind

colors: {
  custom: {
    50: '#68529b',
    500: '#1c1171',
    950: '#000000',
  },
}

SCSS

$custom: #1c1171;
$custom-light: #68529b;
$custom-dark: #000000;

JSON

{
  "hex": "#1c1171",
  "rgb": {
    "r": 28,
    "g": 17,
    "b": 113
  },
  "hsl": {
    "h": 246.875,
    "s": 73.846,
    "l": 25.49
  },
  "oklch": {
    "l": 0.28037,
    "c": 0.15178,
    "h": 275.5
  },
  "luminance": 0.0184
}

Semantic roles & 50–950 ramp

primary

#1C1171

secondary

#9BA836

accent

#F137DB

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1C1171

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

Preview Lab → · Contrast checker → · Palette generator →