#1C317F#1C317F

#1C317F is a dark, vivid blue. Relative luminance 0.040; OKLCH L 34.9% C 0.134 H 267.4°. Best body text is #FFFFFF at 11.70:1 contrast (WCAG AA passes).

Color values

HEX	#1C317F
RGB	rgb(28, 49, 127)
HSL	hsl(227, 64%, 30%)
HSV	hsv(227, 78%, 50%)
CMYK	cmyk(78%, 61.4%, 0%, 50.2%)
CIE-LAB	lab(23.59, 21.65, -46.48)
CIE-LCH	lch(23.59, 51.27, 294.98°)
OKLab	oklab(34.95% -0.0062 -0.1342)
OKLCH	oklch(34.95% 0.134 267.4)
XYZ	xyz(5.4066, 3.9752, 20.5569)
Luminance	0.0398 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C317F #7F6A1C

analogous

#1C627F #1C317F #391C7F

triadic

#1C317F #7F1C31 #317F1C

tetradic

#1C317F #7F1C62 #7F6A1C #1C7F39

square

#1C317F #7F1C62 #7F6A1C #1C7F39

split-complementary

#1C317F #7F391C #627F1C

monochromatic

#060A1B #111E4D #1C317F #2744B1 #4060D5

Accessibility & contrast

On white

11.70

#1C317F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1C317F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C317F

11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C317F	#FFFFFF	#000000	##FFFFFF
##1C317F	1.00	11.70	1.80	11.70
#FFFFFF	11.70	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D82

Deuteranopia (green-blind)

#00347D

Tritanopia (blue-blind)

#004553

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1c317f;
/* rgb */ color: rgb(28, 49, 127);
/* oklch */ color: oklch(34.9% 0.134 267.4);

Tailwind

colors: {
  custom: {
    50: '#6968a5',
    500: '#1c317f',
    950: '#000000',
  },
}

SCSS

$custom: #1c317f;
$custom-light: #6968a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1c317f",
  "rgb": {
    "r": 28,
    "g": 49,
    "b": 127
  },
  "hsl": {
    "h": 227.273,
    "s": 63.871,
    "l": 30.392
  },
  "oklch": {
    "l": 0.34949,
    "c": 0.13436,
    "h": 267.4
  },
  "luminance": 0.03976
}

Semantic roles & 50–950 ramp

primary

#1C317F

secondary

#B39B44

accent

#C441E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1C317F

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

Preview Lab → · Contrast checker → · Palette generator →