#1A307C#1A307C

#1A307C is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.4% C 0.132 H 266.8°. Best body text is #FFFFFF at 11.95:1 contrast (WCAG AA passes).

Color values

HEX	#1A307C
RGB	rgb(26, 48, 124)
HSL	hsl(227, 65%, 29%)
HSV	hsv(227, 79%, 49%)
CMYK	cmyk(79%, 61.3%, 0%, 51.4%)
CIE-LAB	lab(22.96, 20.91, -45.61)
CIE-LCH	lch(22.96, 50.18, 294.62°)
OKLab	oklab(34.37% -0.0074 -0.1317)
OKLCH	oklch(34.37% 0.132 266.8)
XYZ	xyz(5.1198, 3.7882, 19.5262)
Luminance	0.0379 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A307C #7C661A

analogous

#1A617C #1A307C #351A7C

triadic

#1A307C #7C1A30 #307C1A

tetradic

#1A307C #7C1A61 #7C661A #1A7C35

square

#1A307C #7C1A61 #7C661A #1A7C35

split-complementary

#1A307C #7C351A #617C1A

monochromatic

#050A19 #0F1C49 #1A307C #2544AF #3B5DD6

Accessibility & contrast

On white

11.95

#1A307C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1A307C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A307C

11.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A307C	#FFFFFF	#000000	##FFFFFF
##1A307C	1.00	11.95	1.76	11.95
#FFFFFF	11.95	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B7F

Deuteranopia (green-blind)

#00327B

Tritanopia (blue-blind)

#004351

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1a307c;
/* rgb */ color: rgb(26, 48, 124);
/* oklch */ color: oklch(34.4% 0.132 266.8);

Tailwind

colors: {
  custom: {
    50: '#6767a3',
    500: '#1a307c',
    950: '#000000',
  },
}

SCSS

$custom: #1a307c;
$custom-light: #6767a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1a307c",
  "rgb": {
    "r": 26,
    "g": 48,
    "b": 124
  },
  "hsl": {
    "h": 226.531,
    "s": 65.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.34372,
    "c": 0.13195,
    "h": 266.8
  },
  "luminance": 0.03789
}

Semantic roles & 50–950 ramp

primary

#1A307C

secondary

#B09742

accent

#C240E8

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1A307C

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

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