#1C3C99#1C3C99

#1C3C99 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.6% C 0.157 H 265.2°. Best body text is #FFFFFF at 9.74:1 contrast (WCAG AA passes).

Color values

HEX	#1C3C99
RGB	rgb(28, 60, 153)
HSL	hsl(225, 69%, 35%)
HSV	hsv(225, 82%, 60%)
CMYK	cmyk(81.7%, 60.8%, 0%, 40%)
CIE-LAB	lab(28.84, 24.38, -54.02)
CIE-LCH	lch(28.84, 59.26, 294.29°)
OKLab	oklab(39.57% -0.0131 -0.1562)
OKLCH	oklch(39.57% 0.157 265.2)
XYZ	xyz(7.8425, 5.7776, 30.8327)
Luminance	0.0578 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3C99 #99791C

analogous

#1C7A99 #1C3C99 #3A1C99

triadic

#1C3C99 #991C3C #3C991C

tetradic

#1C3C99 #991C7A #99791C #1C993A

square

#1C3C99 #991C7A #99791C #1C993A

split-complementary

#1C3C99 #993A1C #7A991C

monochromatic

#091332 #132865 #1C3C99 #2550CD #5075DF

Accessibility & contrast

On white

9.74

#1C3C99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#1C3C99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3C99

9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3C99	#FFFFFF	#000000	##FFFFFF
##1C3C99	1.00	9.74	2.16	9.74
#FFFFFF	9.74	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9C

Deuteranopia (green-blind)

#003E97

Tritanopia (blue-blind)

#005464

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1c3c99;
/* rgb */ color: rgb(28, 60, 153);
/* oklch */ color: oklch(39.6% 0.157 265.2);

Tailwind

colors: {
  custom: {
    50: '#6f71b8',
    500: '#1c3c99',
    950: '#000000',
  },
}

SCSS

$custom: #1c3c99;
$custom-light: #6f71b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3c99",
  "rgb": {
    "r": 28,
    "g": 60,
    "b": 153
  },
  "hsl": {
    "h": 224.64,
    "s": 69.061,
    "l": 35.49
  },
  "oklch": {
    "l": 0.39567,
    "c": 0.15673,
    "h": 265.2
  },
  "luminance": 0.05779
}

Semantic roles & 50–950 ramp

primary

#1C3C99

secondary

#C2A44F

accent

#BF3CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1C3C99

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

Preview Lab → · Contrast checker → · Palette generator →