#1A317F#1A317F

#1A317F is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.9% C 0.135 H 266.6°. Best body text is #FFFFFF at 11.73:1 contrast (WCAG AA passes).

Color values

HEX	#1A317F
RGB	rgb(26, 49, 127)
HSL	hsl(226, 66%, 30%)
HSV	hsv(226, 80%, 50%)
CMYK	cmyk(79.5%, 61.4%, 0%, 50.2%)
CIE-LAB	lab(23.50, 21.41, -46.63)
CIE-LCH	lch(23.50, 51.31, 294.67°)
OKLab	oklab(34.86% -0.008 -0.1347)
OKLCH	oklch(34.86% 0.135 266.6)
XYZ	xyz(5.3537, 3.9479, 20.5544)
Luminance	0.0395 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A317F #7F681A

analogous

#1A637F #1A317F #361A7F

triadic

#1A317F #7F1A31 #317F1A

tetradic

#1A317F #7F1A63 #7F681A #1A7F36

square

#1A317F #7F1A63 #7F681A #1A7F36

split-complementary

#1A317F #7F361A #637F1A

monochromatic

#050A19 #101D4C #1A317F #2445B2 #3C60D7

Accessibility & contrast

On white

11.73

#1A317F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1A317F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A317F

11.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A317F	#FFFFFF	#000000	##FFFFFF
##1A317F	1.00	11.73	1.79	11.73
#FFFFFF	11.73	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D82

Deuteranopia (green-blind)

#00337D

Tritanopia (blue-blind)

#004553

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1a317f;
/* rgb */ color: rgb(26, 49, 127);
/* oklch */ color: oklch(34.9% 0.135 266.6);

Tailwind

colors: {
  custom: {
    50: '#6868a5',
    500: '#1a317f',
    950: '#000000',
  },
}

SCSS

$custom: #1a317f;
$custom-light: #6868a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1a317f",
  "rgb": {
    "r": 26,
    "g": 49,
    "b": 127
  },
  "hsl": {
    "h": 226.337,
    "s": 66.013,
    "l": 30
  },
  "oklch": {
    "l": 0.34857,
    "c": 0.13495,
    "h": 266.6
  },
  "luminance": 0.03949
}

Semantic roles & 50–950 ramp

primary

#1A317F

secondary

#B39942

accent

#C23FE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1A317F

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

Preview Lab → · Contrast checker → · Palette generator →