#1C1F91#1C1F91

#1C1F91 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.7% C 0.179 H 270.5°. Best body text is #FFFFFF at 12.69:1 contrast (WCAG AA passes).

Color values

HEX	#1C1F91
RGB	rgb(28, 31, 145)
HSL	hsl(238, 68%, 34%)
HSV	hsv(238, 81%, 57%)
CMYK	cmyk(80.7%, 78.6%, 0%, 43.1%)
CIE-LAB	lab(21.10, 40.05, -61.84)
CIE-LCH	lch(21.10, 73.67, 302.93°)
OKLab	oklab(33.69% 0.0017 -0.1791)
OKLCH	oklch(33.69% 0.179 270.5)
XYZ	xyz(6.0780, 3.2705, 27.0935)
Luminance	0.0327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C1F91 #918E1C

analogous

#1C5A91 #1C1F91 #541C91

triadic

#1C1F91 #911C1F #1F911C

tetradic

#1C1F91 #911C5A #918E1C #1C9154

square

#1C1F91 #911C5A #918E1C #1C9154

split-complementary

#1C1F91 #91541C #5A911C

monochromatic

#08092A #12145E #1C1F91 #262AC4 #4B4FDC

Accessibility & contrast

On white

12.69

#1C1F91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1C1F91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C1F91

12.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C1F91	#FFFFFF	#000000	##FFFFFF
##1C1F91	1.00	12.69	1.65	12.69
#FFFFFF	12.69	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003894

Deuteranopia (green-blind)

#002D8F

Tritanopia (blue-blind)

#004157

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1c1f91;
/* rgb */ color: rgb(28, 31, 145);
/* oklch */ color: oklch(33.7% 0.179 270.5);

Tailwind

colors: {
  custom: {
    50: '#6f5db3',
    500: '#1c1f91',
    950: '#000000',
  },
}

SCSS

$custom: #1c1f91;
$custom-light: #6f5db3;
$custom-dark: #000000;

JSON

{
  "hex": "#1c1f91",
  "rgb": {
    "r": 28,
    "g": 31,
    "b": 145
  },
  "hsl": {
    "h": 238.462,
    "s": 67.63,
    "l": 33.922
  },
  "oklch": {
    "l": 0.33688,
    "c": 0.17909,
    "h": 270.5
  },
  "luminance": 0.03271
}

Semantic roles & 50–950 ramp

primary

#1C1F91

secondary

#BEBB4A

accent

#E63DEB

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1C1F91

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

Preview Lab → · Contrast checker → · Palette generator →