#1C48A9#1C48A9

#1C48A9 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.4% C 0.164 H 263.0°. Best body text is #FFFFFF at 8.24:1 contrast (WCAG AA passes).

Color values

HEX	#1C48A9
RGB	rgb(28, 72, 169)
HSL	hsl(221, 72%, 39%)
HSV	hsv(221, 83%, 66%)
CMYK	cmyk(83.4%, 57.4%, 0%, 33.7%)
CIE-LAB	lab(33.45, 22.56, -56.17)
CIE-LCH	lch(33.45, 60.53, 291.88°)
OKLab	oklab(43.43% -0.0199 -0.1623)
OKLCH	oklch(43.43% 0.164 263)
XYZ	xyz(9.9551, 7.7450, 38.4987)
Luminance	0.0775 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C48A9 #A97D1C

analogous

#1C8EA9 #1C48A9 #371CA9

triadic

#1C48A9 #A91C48 #48A91C

tetradic

#1C48A9 #A91C8E #A97D1C #1CA937

square

#1C48A9 #A91C8E #A97D1C #1CA937

split-complementary

#1C48A9 #A9371C #8EA91C

monochromatic

#0B1B40 #133274 #1C48A9 #275FDB #5B86E4

Accessibility & contrast

On white

8.24

#1C48A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#1C48A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C48A9

8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C48A9	#FFFFFF	#000000	##FFFFFF
##1C48A9	1.00	8.24	2.55	8.24
#FFFFFF	8.24	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055AC

Deuteranopia (green-blind)

#0048A7

Tritanopia (blue-blind)

#006071

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1c48a9;
/* rgb */ color: rgb(28, 72, 169);
/* oklch */ color: oklch(43.4% 0.164 263.0);

Tailwind

colors: {
  custom: {
    50: '#727ac3',
    500: '#1c48a9',
    950: '#000000',
  },
}

SCSS

$custom: #1c48a9;
$custom-light: #727ac3;
$custom-dark: #000000;

JSON

{
  "hex": "#1c48a9",
  "rgb": {
    "r": 28,
    "g": 72,
    "b": 169
  },
  "hsl": {
    "h": 221.277,
    "s": 71.574,
    "l": 38.627
  },
  "oklch": {
    "l": 0.43431,
    "c": 0.16353,
    "h": 263
  },
  "luminance": 0.07746
}

Semantic roles & 50–950 ramp

primary

#1C48A9

secondary

#C8A559

accent

#B639EE

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#090913

muted

#7B7B82

Preview Lab

Preview with #1C48A9

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

Preview Lab → · Contrast checker → · Palette generator →