#1C317D#1C317D

#1C317D is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.8% C 0.131 H 267.3°. Best body text is #FFFFFF at 11.77:1 contrast (WCAG AA passes).

Color values

HEX	#1C317D
RGB	rgb(28, 49, 125)
HSL	hsl(227, 63%, 30%)
HSV	hsv(227, 78%, 49%)
CMYK	cmyk(77.6%, 60.8%, 0%, 51%)
CIE-LAB	lab(23.42, 20.85, -45.50)
CIE-LCH	lch(23.42, 50.05, 294.62°)
OKLab	oklab(34.77% -0.0063 -0.1313)
OKLCH	oklch(34.77% 0.131 267.3)
XYZ	xyz(5.2776, 3.9236, 19.8772)
Luminance	0.0392 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C317D #7D681C

analogous

#1C627D #1C317D #371C7D

triadic

#1C317D #7D1C31 #317D1C

tetradic

#1C317D #7D1C62 #7D681C #1C7D37

square

#1C317D #7D1C62 #7D681C #1C7D37

split-complementary

#1C317D #7D371C #627D1C

monochromatic

#060A19 #111D4B #1C317D #2745AF #3F60D4

Accessibility & contrast

On white

11.77

#1C317D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1C317D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C317D

11.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C317D	#FFFFFF	#000000	##FFFFFF
##1C317D	1.00	11.77	1.78	11.77
#FFFFFF	11.77	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C80

Deuteranopia (green-blind)

#00337C

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1c317d;
/* rgb */ color: rgb(28, 49, 125);
/* oklch */ color: oklch(34.8% 0.131 267.3);

Tailwind

colors: {
  custom: {
    50: '#6868a3',
    500: '#1c317d',
    950: '#000000',
  },
}

SCSS

$custom: #1c317d;
$custom-light: #6868a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1c317d",
  "rgb": {
    "r": 28,
    "g": 49,
    "b": 125
  },
  "hsl": {
    "h": 227.01,
    "s": 63.399,
    "l": 30
  },
  "oklch": {
    "l": 0.34767,
    "c": 0.13149,
    "h": 267.3
  },
  "luminance": 0.03924
}

Semantic roles & 50–950 ramp

primary

#1C317D

secondary

#B19944

accent

#C341E6

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1C317D

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

Preview Lab → · Contrast checker → · Palette generator →