#1A307E#1A307E

#1A307E is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.6% C 0.135 H 266.9°. Best body text is #FFFFFF at 11.88:1 contrast (WCAG AA passes).

Color values

HEX	#1A307E
RGB	rgb(26, 48, 126)
HSL	hsl(227, 66%, 30%)
HSV	hsv(227, 79%, 49%)
CMYK	cmyk(79.4%, 61.9%, 0%, 50.6%)
CIE-LAB	lab(23.13, 21.71, -46.59)
CIE-LCH	lch(23.13, 51.41, 294.98°)
OKLab	oklab(34.56% -0.0073 -0.1346)
OKLCH	oklch(34.56% 0.135 266.9)
XYZ	xyz(5.2475, 3.8393, 20.1991)
Luminance	0.0384 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A307E #7E681A

analogous

#1A627E #1A307E #361A7E

triadic

#1A307E #7E1A30 #307E1A

tetradic

#1A307E #7E1A62 #7E681A #1A7E36

square

#1A307E #7E1A62 #7E681A #1A7E36

split-complementary

#1A307E #7E361A #627E1A

monochromatic

#050A19 #101D4B #1A307E #2443B1 #3C5ED7

Accessibility & contrast

On white

11.88

#1A307E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1A307E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A307E

11.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A307E	#FFFFFF	#000000	##FFFFFF
##1A307E	1.00	11.88	1.77	11.88
#FFFFFF	11.88	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C81

Deuteranopia (green-blind)

#00337C

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1a307e;
/* rgb */ color: rgb(26, 48, 126);
/* oklch */ color: oklch(34.6% 0.135 266.9);

Tailwind

colors: {
  custom: {
    50: '#6868a4',
    500: '#1a307e',
    950: '#000000',
  },
}

SCSS

$custom: #1a307e;
$custom-light: #6868a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1a307e",
  "rgb": {
    "r": 26,
    "g": 48,
    "b": 126
  },
  "hsl": {
    "h": 226.8,
    "s": 65.789,
    "l": 29.804
  },
  "oklch": {
    "l": 0.34557,
    "c": 0.13482,
    "h": 266.9
  },
  "luminance": 0.0384
}

Semantic roles & 50–950 ramp

primary

#1A307E

secondary

#B29942

accent

#C33FE9

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1A307E

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

Preview Lab → · Contrast checker → · Palette generator →