#1A307D#1A307D

#1A307D is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.5% C 0.133 H 266.8°. Best body text is #FFFFFF at 11.91:1 contrast (WCAG AA passes).

Color values

HEX	#1A307D
RGB	rgb(26, 48, 125)
HSL	hsl(227, 66%, 30%)
HSV	hsv(227, 79%, 49%)
CMYK	cmyk(79.2%, 61.6%, 0%, 51%)
CIE-LAB	lab(23.05, 21.31, -46.11)
CIE-LCH	lch(23.05, 50.79, 294.81°)
OKLab	oklab(34.46% -0.0073 -0.1332)
OKLCH	oklch(34.46% 0.133 266.8)
XYZ	xyz(5.1833, 3.8136, 19.8610)
Luminance	0.0381 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A307D #7D671A

analogous

#1A617D #1A307D #361A7D

triadic

#1A307D #7D1A30 #307D1A

tetradic

#1A307D #7D1A61 #7D671A #1A7D36

square

#1A307D #7D1A61 #7D671A #1A7D36

split-complementary

#1A307D #7D361A #617D1A

monochromatic

#050A19 #0F1D4A #1A307D #2543B0 #3B5ED6

Accessibility & contrast

On white

11.91

#1A307D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1A307D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A307D

11.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A307D	#FFFFFF	#000000	##FFFFFF
##1A307D	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)

#003C80

Deuteranopia (green-blind)

#00327C

Tritanopia (blue-blind)

#004451

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1a307d;
/* rgb */ color: rgb(26, 48, 125);
/* oklch */ color: oklch(34.5% 0.133 266.8);

Tailwind

colors: {
  custom: {
    50: '#6768a3',
    500: '#1a307d',
    950: '#000000',
  },
}

SCSS

$custom: #1a307d;
$custom-light: #6768a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1a307d",
  "rgb": {
    "r": 26,
    "g": 48,
    "b": 125
  },
  "hsl": {
    "h": 226.667,
    "s": 65.563,
    "l": 29.608
  },
  "oklch": {
    "l": 0.34464,
    "c": 0.13338,
    "h": 266.8
  },
  "luminance": 0.03814
}

Semantic roles & 50–950 ramp

primary

#1A307D

secondary

#B19842

accent

#C33FE9

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1A307D

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

Preview Lab → · Contrast checker → · Palette generator →