#1C318A#1C318A

#1C318A is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.0% C 0.150 H 267.6°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#1C318A
RGB	rgb(28, 49, 138)
HSL	hsl(229, 66%, 33%)
HSV	hsv(229, 80%, 54%)
CMYK	cmyk(79.7%, 64.5%, 0%, 45.9%)
CIE-LAB	lab(24.57, 26.01, -51.77)
CIE-LCH	lch(24.57, 57.93, 296.67°)
OKLab	oklab(35.98% -0.0062 -0.1497)
OKLCH	oklch(35.98% 0.15 267.6)
XYZ	xyz(6.1631, 4.2778, 24.5407)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C318A #8A751C

analogous

#1C688A #1C318A #3E1C8A

triadic

#1C318A #8A1C31 #318A1C

tetradic

#1C318A #8A1C68 #8A751C #1C8A3E

square

#1C318A #8A1C68 #8A751C #1C8A3E

split-complementary

#1C318A #8A3E1C #688A1C

monochromatic

#070D24 #121F57 #1C318A #2643BD #4763DA

Accessibility & contrast

On white

11.32

#1C318A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1C318A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C318A

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C318A	#FFFFFF	#000000	##FFFFFF
##1C318A	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408D

Deuteranopia (green-blind)

#003588

Tritanopia (blue-blind)

#004858

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1c318a;
/* rgb */ color: rgb(28, 49, 138);
/* oklch */ color: oklch(36.0% 0.150 267.6);

Tailwind

colors: {
  custom: {
    50: '#6b68ad',
    500: '#1c318a',
    950: '#000000',
  },
}

SCSS

$custom: #1c318a;
$custom-light: #6b68ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c318a",
  "rgb": {
    "r": 28,
    "g": 49,
    "b": 138
  },
  "hsl": {
    "h": 228.545,
    "s": 66.265,
    "l": 32.549
  },
  "oklch": {
    "l": 0.3598,
    "c": 0.14986,
    "h": 267.6
  },
  "luminance": 0.04278
}

Semantic roles & 50–950 ramp

primary

#1C318A

secondary

#BBA546

accent

#C93FE9

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1C318A

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

Preview Lab → · Contrast checker → · Palette generator →