#1D307C#1D307C

#1D307C is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.5% C 0.131 H 268.0°. Best body text is #FFFFFF at 11.89:1 contrast (WCAG AA passes).

Color values

HEX	#1D307C
RGB	rgb(29, 48, 124)
HSL	hsl(228, 62%, 30%)
HSV	hsv(228, 77%, 49%)
CMYK	cmyk(76.6%, 61.3%, 0%, 51.4%)
CIE-LAB	lab(23.10, 21.28, -45.38)
CIE-LCH	lch(23.10, 50.12, 295.13°)
OKLab	oklab(34.52% -0.0046 -0.131)
OKLCH	oklch(34.52% 0.131 268)
XYZ	xyz(5.2005, 3.8298, 19.5300)
Luminance	0.0383 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D307C #7C691D

analogous

#1D607C #1D307C #391D7C

triadic

#1D307C #7C1D30 #307C1D

tetradic

#1D307C #7C1D60 #7C691D #1D7C39

square

#1D307C #7C1D60 #7C691D #1D7C39

split-complementary

#1D307C #7C391D #607C1D

monochromatic

#060A19 #111D4A #1D307C #2943AE #415ED3

Accessibility & contrast

On white

11.89

#1D307C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1D307C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D307C

11.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D307C	#FFFFFF	#000000	##FFFFFF
##1D307C	1.00	11.89	1.77	11.89
#FFFFFF	11.89	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.89	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: #1d307c;
/* rgb */ color: rgb(29, 48, 124);
/* oklch */ color: oklch(34.5% 0.131 268.0);

Tailwind

colors: {
  custom: {
    50: '#6868a3',
    500: '#1d307c',
    950: '#000000',
  },
}

SCSS

$custom: #1d307c;
$custom-light: #6868a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1d307c",
  "rgb": {
    "r": 29,
    "g": 48,
    "b": 124
  },
  "hsl": {
    "h": 228,
    "s": 62.092,
    "l": 30
  },
  "oklch": {
    "l": 0.34518,
    "c": 0.13106,
    "h": 268
  },
  "luminance": 0.0383
}

Semantic roles & 50–950 ramp

primary

#1D307C

secondary

#B09A45

accent

#C543E5

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1D307C

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

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