#1C2591#1C2591

#1C2591 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.6% C 0.173 H 269.8°. Best body text is #FFFFFF at 12.19:1 contrast (WCAG AA passes).

Color values

HEX	#1C2591
RGB	rgb(28, 37, 145)
HSL	hsl(235, 68%, 34%)
HSV	hsv(235, 81%, 57%)
CMYK	cmyk(80.7%, 74.5%, 0%, 43.1%)
CIE-LAB	lab(22.35, 36.50, -59.76)
CIE-LCH	lch(22.35, 70.03, 301.42°)
OKLab	oklab(34.58% -0.0006 -0.1731)
OKLCH	oklch(34.58% 0.173 269.8)
XYZ	xyz(6.2495, 3.6136, 27.1507)
Luminance	0.0361 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2591 #91881C

analogous

#1C6091 #1C2591 #4E1C91

triadic

#1C2591 #911C25 #25911C

tetradic

#1C2591 #911C60 #91881C #1C914E

square

#1C2591 #911C60 #91881C #1C914E

split-complementary

#1C2591 #914E1C #60911C

monochromatic

#080B2A #12185E #1C2591 #2632C4 #4B56DC

Accessibility & contrast

On white

12.19

#1C2591 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#1C2591 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2591

12.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2591	#FFFFFF	#000000	##FFFFFF
##1C2591	1.00	12.19	1.72	12.19
#FFFFFF	12.19	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B94

Deuteranopia (green-blind)

#00308F

Tritanopia (blue-blind)

#004459

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1c2591;
/* rgb */ color: rgb(28, 37, 145);
/* oklch */ color: oklch(34.6% 0.173 269.8);

Tailwind

colors: {
  custom: {
    50: '#6f60b2',
    500: '#1c2591',
    950: '#000000',
  },
}

SCSS

$custom: #1c2591;
$custom-light: #6f60b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2591",
  "rgb": {
    "r": 28,
    "g": 37,
    "b": 145
  },
  "hsl": {
    "h": 235.385,
    "s": 67.63,
    "l": 33.922
  },
  "oklch": {
    "l": 0.34579,
    "c": 0.17311,
    "h": 269.8
  },
  "luminance": 0.03614
}

Semantic roles & 50–950 ramp

primary

#1C2591

secondary

#BEB64A

accent

#DD3DEB

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1C2591

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

Preview Lab → · Contrast checker → · Palette generator →