#1C2973#1C2973

#1C2973 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.2% C 0.128 H 269.9°. Best body text is #FFFFFF at 13.01:1 contrast (WCAG AA passes).

Color values

HEX	#1C2973
RGB	rgb(28, 41, 115)
HSL	hsl(231, 61%, 28%)
HSV	hsv(231, 76%, 45%)
CMYK	cmyk(75.7%, 64.3%, 0%, 54.9%)
CIE-LAB	lab(20.32, 22.50, -44.17)
CIE-LCH	lch(20.32, 49.57, 296.99°)
OKLab	oklab(32.19% -0.0002 -0.1276)
OKLCH	oklch(32.19% 0.128 269.9)
XYZ	xyz(4.3653, 3.0701, 16.5789)
Luminance	0.0307 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2973 #73661C

analogous

#1C5573 #1C2973 #3A1C73

triadic

#1C2973 #731C29 #29731C

tetradic

#1C2973 #731C55 #73661C #1C733A

square

#1C2973 #731C55 #73661C #1C733A

split-complementary

#1C2973 #733A1C #55731C

monochromatic

#060919 #101742 #1C2973 #283BA4 #3A51CF

Accessibility & contrast

On white

13.01

#1C2973 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#1C2973 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2973

13.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2973	#FFFFFF	#000000	##FFFFFF
##1C2973	1.00	13.01	1.61	13.01
#FFFFFF	13.01	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003575

Deuteranopia (green-blind)

#002D72

Tritanopia (blue-blind)

#003C49

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1c2973;
/* rgb */ color: rgb(28, 41, 115);
/* oklch */ color: oklch(32.2% 0.128 269.9);

Tailwind

colors: {
  custom: {
    50: '#66629c',
    500: '#1c2973',
    950: '#000000',
  },
}

SCSS

$custom: #1c2973;
$custom-light: #66629c;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2973",
  "rgb": {
    "r": 28,
    "g": 41,
    "b": 115
  },
  "hsl": {
    "h": 231.034,
    "s": 60.839,
    "l": 28.039
  },
  "oklch": {
    "l": 0.32193,
    "c": 0.12756,
    "h": 269.9
  },
  "luminance": 0.03071
}

Semantic roles & 50–950 ramp

primary

#1C2973

secondary

#A79843

accent

#CC44E4

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1C2973

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

Preview Lab → · Contrast checker → · Palette generator →