#1C28A0#1C28A0

#1C28A0 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.7% C 0.189 H 268.8°. Best body text is #FFFFFF at 11.29:1 contrast (WCAG AA passes).

Color values

HEX	#1C28A0
RGB	rgb(28, 40, 160)
HSL	hsl(235, 70%, 37%)
HSV	hsv(235, 83%, 63%)
CMYK	cmyk(82.5%, 75%, 0%, 37.3%)
CIE-LAB	lab(24.64, 40.03, -65.19)
CIE-LCH	lch(24.64, 76.50, 301.56°)
OKLab	oklab(36.7% -0.0038 -0.1889)
OKLCH	oklch(36.7% 0.189 268.8)
XYZ	xyz(7.5807, 4.3016, 33.6817)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C28A0 #A0941C

analogous

#1C6AA0 #1C28A0 #521CA0

triadic

#1C28A0 #A01C28 #28A01C

tetradic

#1C28A0 #A01C6A #A0941C #1CA052

square

#1C28A0 #A01C6A #A0941C #1CA052

split-complementary

#1C28A0 #A0521C #6AA01C

monochromatic

#0A0E38 #131B6C #1C28A0 #2535D4 #5562E1

Accessibility & contrast

On white

11.29

#1C28A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1C28A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C28A0

11.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C28A0	#FFFFFF	#000000	##FFFFFF
##1C28A0	1.00	11.29	1.86	11.29
#FFFFFF	11.29	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041A4

Deuteranopia (green-blind)

#00349E

Tritanopia (blue-blind)

#004B62

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1c28a0;
/* rgb */ color: rgb(28, 40, 160);
/* oklch */ color: oklch(36.7% 0.189 268.8);

Tailwind

colors: {
  custom: {
    50: '#7263bd',
    500: '#1c28a0',
    950: '#000000',
  },
}

SCSS

$custom: #1c28a0;
$custom-light: #7263bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1c28a0",
  "rgb": {
    "r": 28,
    "g": 40,
    "b": 160
  },
  "hsl": {
    "h": 234.545,
    "s": 70.213,
    "l": 36.863
  },
  "oklch": {
    "l": 0.36704,
    "c": 0.18892,
    "h": 268.8
  },
  "luminance": 0.04303
}

Semantic roles & 50–950 ramp

primary

#1C28A0

secondary

#C4BA53

accent

#DD3BED

background

#F7F5FB

surface

#EEEAF7

border

#C9C6D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #1C28A0

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

Preview Lab → · Contrast checker → · Palette generator →