#1C2971#1C2971

#1C2971 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.0% C 0.125 H 269.9°. Best body text is #FFFFFF at 13.08:1 contrast (WCAG AA passes).

Color values

HEX	#1C2971
RGB	rgb(28, 41, 113)
HSL	hsl(231, 60%, 28%)
HSV	hsv(231, 75%, 44%)
CMYK	cmyk(75.2%, 63.7%, 0%, 55.7%)
CIE-LAB	lab(20.14, 21.70, -43.18)
CIE-LCH	lch(20.14, 48.33, 296.68°)
OKLab	oklab(32% -0.0001 -0.1246)
OKLCH	oklch(32% 0.125 269.9)
XYZ	xyz(4.2514, 3.0246, 15.9793)
Luminance	0.0302 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2971 #71641C

analogous

#1C5371 #1C2971 #3A1C71

triadic

#1C2971 #711C29 #29711C

tetradic

#1C2971 #711C53 #71641C #1C713A

square

#1C2971 #711C53 #71641C #1C713A

split-complementary

#1C2971 #713A1C #53711C

monochromatic

#060919 #101740 #1C2971 #283BA2 #3950CE

Accessibility & contrast

On white

13.08

#1C2971 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#1C2971 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2971

13.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2971	#FFFFFF	#000000	##FFFFFF
##1C2971	1.00	13.08	1.61	13.08
#FFFFFF	13.08	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003573

Deuteranopia (green-blind)

#002D70

Tritanopia (blue-blind)

#003B48

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1c2971;
/* rgb */ color: rgb(28, 41, 113);
/* oklch */ color: oklch(32.0% 0.125 269.9);

Tailwind

colors: {
  custom: {
    50: '#66629a',
    500: '#1c2971',
    950: '#000000',
  },
}

SCSS

$custom: #1c2971;
$custom-light: #66629a;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2971",
  "rgb": {
    "r": 28,
    "g": 41,
    "b": 113
  },
  "hsl": {
    "h": 230.824,
    "s": 60.284,
    "l": 27.647
  },
  "oklch": {
    "l": 0.32003,
    "c": 0.12465,
    "h": 269.9
  },
  "luminance": 0.03025
}

Semantic roles & 50–950 ramp

primary

#1C2971

secondary

#A69643

accent

#CB44E3

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #1C2971

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

Preview Lab → · Contrast checker → · Palette generator →