#1C3CB4#1C3CB4

#1C3CB4 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.1% C 0.193 H 266.0°. Best body text is #FFFFFF at 8.92:1 contrast (WCAG AA passes).

Color values

HEX	#1C3CB4
RGB	rgb(28, 60, 180)
HSL	hsl(227, 73%, 41%)
HSV	hsv(227, 84%, 71%)
CMYK	cmyk(84.4%, 66.7%, 0%, 29.4%)
CIE-LAB	lab(31.28, 34.80, -66.27)
CIE-LCH	lch(31.28, 74.85, 297.71°)
OKLab	oklab(42.12% -0.0134 -0.192)
OKLCH	oklch(42.12% 0.193 266)
XYZ	xyz(10.3301, 6.7726, 43.9340)
Luminance	0.0677 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3CB4 #B4941C

analogous

#1C88B4 #1C3CB4 #481CB4

triadic

#1C3CB4 #B41C3C #3CB41C

tetradic

#1C3CB4 #B41C88 #B4941C #1CB448

square

#1C3CB4 #B41C88 #B4941C #1CB448

split-complementary

#1C3CB4 #B4481C #88B41C

monochromatic

#0C194A #142A7F #1C3CB4 #2F54DF #647FE7

Accessibility & contrast

On white

8.92

#1C3CB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#1C3CB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3CB4

8.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3CB4	#FFFFFF	#000000	##FFFFFF
##1C3CB4	1.00	8.92	2.35	8.92
#FFFFFF	8.92	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B8

Deuteranopia (green-blind)

#0042B2

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1c3cb4;
/* rgb */ color: rgb(28, 60, 180);
/* oklch */ color: oklch(42.1% 0.193 266.0);

Tailwind

colors: {
  custom: {
    50: '#7671cc',
    500: '#1c3cb4',
    950: '#000000',
  },
}

SCSS

$custom: #1c3cb4;
$custom-light: #7671cc;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3cb4",
  "rgb": {
    "r": 28,
    "g": 60,
    "b": 180
  },
  "hsl": {
    "h": 227.368,
    "s": 73.077,
    "l": 40.784
  },
  "oklch": {
    "l": 0.42119,
    "c": 0.1925,
    "h": 266
  },
  "luminance": 0.06774
}

Semantic roles & 50–950 ramp

primary

#1C3CB4

secondary

#CCB560

accent

#C938F0

background

#F7F6FC

surface

#EEECF9

border

#C9C7D2

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #1C3CB4

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

Preview Lab → · Contrast checker → · Palette generator →