#1C307C#1C307C

#1C307C is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.5% C 0.131 H 267.6°. Best body text is #FFFFFF at 11.91:1 contrast (WCAG AA passes).

Color values

HEX	#1C307C
RGB	rgb(28, 48, 124)
HSL	hsl(228, 63%, 30%)
HSV	hsv(228, 77%, 49%)
CMYK	cmyk(77.4%, 61.3%, 0%, 51.4%)
CIE-LAB	lab(23.05, 21.15, -45.46)
CIE-LCH	lch(23.05, 50.14, 294.95°)
OKLab	oklab(34.47% -0.0055 -0.1312)
OKLCH	oklch(34.47% 0.131 267.6)
XYZ	xyz(5.1727, 3.8155, 19.5287)
Luminance	0.0382 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C307C #7C681C

analogous

#1C607C #1C307C #381C7C

triadic

#1C307C #7C1C30 #307C1C

tetradic

#1C307C #7C1C60 #7C681C #1C7C38

square

#1C307C #7C1C60 #7C681C #1C7C38

split-complementary

#1C307C #7C381C #607C1C

monochromatic

#060A19 #111D4A #1C307C #2743AE #3F5ED4

Accessibility & contrast

On white

11.91

#1C307C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1C307C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C307C

11.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C307C	#FFFFFF	#000000	##FFFFFF
##1C307C	1.00	11.91	1.76	11.91
#FFFFFF	11.91	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C7F

Deuteranopia (green-blind)

#00337B

Tritanopia (blue-blind)

#004351

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1c307c;
/* rgb */ color: rgb(28, 48, 124);
/* oklch */ color: oklch(34.5% 0.131 267.6);

Tailwind

colors: {
  custom: {
    50: '#6868a3',
    500: '#1c307c',
    950: '#000000',
  },
}

SCSS

$custom: #1c307c;
$custom-light: #6868a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1c307c",
  "rgb": {
    "r": 28,
    "g": 48,
    "b": 124
  },
  "hsl": {
    "h": 227.5,
    "s": 63.158,
    "l": 29.804
  },
  "oklch": {
    "l": 0.34468,
    "c": 0.13136,
    "h": 267.6
  },
  "luminance": 0.03816
}

Semantic roles & 50–950 ramp

primary

#1C307C

secondary

#B09944

accent

#C442E6

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1C307C

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

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