#1C48BB#1C48BB

#1C48BB is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.0% C 0.187 H 264.1°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#1C48BB
RGB	rgb(28, 72, 187)
HSL	hsl(223, 74%, 42%)
HSV	hsv(223, 85%, 73%)
CMYK	cmyk(85%, 61.5%, 0%, 26.7%)
CIE-LAB	lab(34.94, 29.60, -64.41)
CIE-LCH	lch(34.94, 70.89, 294.68°)
OKLab	oklab(45.01% -0.0192 -0.1865)
OKLCH	oklch(45.01% 0.187 264.1)
XYZ	xyz(11.7627, 8.4680, 48.0186)
Luminance	0.0847 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C48BB #BB8F1C

analogous

#1C98BB #1C48BB #3F1CBB

triadic

#1C48BB #BB1C48 #48BB1C

tetradic

#1C48BB #BB1C98 #BB8F1C #1CBB3F

square

#1C48BB #BB1C98 #BB8F1C #1CBB3F

split-complementary

#1C48BB #BB3F1C #98BB1C

monochromatic

#0C1F51 #143486 #1C48BB #3463E1 #698CE9

Accessibility & contrast

On white

7.80

#1C48BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#1C48BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C48BB

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C48BB	#FFFFFF	#000000	##FFFFFF
##1C48BB	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ABF

Deuteranopia (green-blind)

#004BB9

Tritanopia (blue-blind)

#00667A

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1c48bb;
/* rgb */ color: rgb(28, 72, 187);
/* oklch */ color: oklch(45.0% 0.187 264.1);

Tailwind

colors: {
  custom: {
    50: '#777ad0',
    500: '#1c48bb',
    950: '#000000',
  },
}

SCSS

$custom: #1c48bb;
$custom-light: #777ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#1c48bb",
  "rgb": {
    "r": 28,
    "g": 72,
    "b": 187
  },
  "hsl": {
    "h": 223.396,
    "s": 73.953,
    "l": 42.157
  },
  "oklch": {
    "l": 0.45014,
    "c": 0.18745,
    "h": 264.1
  },
  "luminance": 0.08469
}

Semantic roles & 50–950 ramp

primary

#1C48BB

secondary

#CEB165

accent

#BD37F1

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0A0914

muted

#7C7B82

Preview Lab

Preview with #1C48BB

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

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