#1C2991#1C2991

#1C2991 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.2% C 0.169 H 269.2°. Best body text is #FFFFFF at 11.83:1 contrast (WCAG AA passes).

Color values

HEX	#1C2991
RGB	rgb(28, 41, 145)
HSL	hsl(233, 68%, 34%)
HSV	hsv(233, 81%, 57%)
CMYK	cmyk(80.7%, 71.7%, 0%, 43.1%)
CIE-LAB	lab(23.26, 33.99, -58.26)
CIE-LCH	lch(23.26, 67.46, 300.26°)
OKLab	oklab(35.23% -0.0023 -0.1688)
OKLCH	oklch(35.23% 0.169 269.2)
XYZ	xyz(6.3809, 3.8764, 27.1945)
Luminance	0.0388 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2991 #91841C

analogous

#1C6491 #1C2991 #4A1C91

triadic

#1C2991 #911C29 #29911C

tetradic

#1C2991 #911C64 #91841C #1C914A

square

#1C2991 #911C64 #91841C #1C914A

split-complementary

#1C2991 #914A1C #64911C

monochromatic

#080C2A #121A5E #1C2991 #2638C4 #4B5BDC

Accessibility & contrast

On white

11.83

#1C2991 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1C2991 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2991

11.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2991	#FFFFFF	#000000	##FFFFFF
##1C2991	1.00	11.83	1.78	11.83
#FFFFFF	11.83	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D94

Deuteranopia (green-blind)

#00328F

Tritanopia (blue-blind)

#00465A

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1c2991;
/* rgb */ color: rgb(28, 41, 145);
/* oklch */ color: oklch(35.2% 0.169 269.2);

Tailwind

colors: {
  custom: {
    50: '#6e63b2',
    500: '#1c2991',
    950: '#000000',
  },
}

SCSS

$custom: #1c2991;
$custom-light: #6e63b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2991",
  "rgb": {
    "r": 28,
    "g": 41,
    "b": 145
  },
  "hsl": {
    "h": 233.333,
    "s": 67.63,
    "l": 33.922
  },
  "oklch": {
    "l": 0.35231,
    "c": 0.16878,
    "h": 269.2
  },
  "luminance": 0.03877
}

Semantic roles & 50–950 ramp

primary

#1C2991

secondary

#BEB24A

accent

#D73DEB

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1C2991

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

Preview Lab → · Contrast checker → · Palette generator →