#1A307B#1A307B

#1A307B is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.3% C 0.131 H 266.7°. Best body text is #FFFFFF at 11.98:1 contrast (WCAG AA passes).

Color values

HEX	#1A307B
RGB	rgb(26, 48, 123)
HSL	hsl(226, 65%, 29%)
HSV	hsv(226, 79%, 48%)
CMYK	cmyk(78.9%, 61%, 0%, 51.8%)
CIE-LAB	lab(22.87, 20.50, -45.12)
CIE-LCH	lch(22.87, 49.56, 294.44°)
OKLab	oklab(34.28% -0.0074 -0.1303)
OKLCH	oklch(34.28% 0.131 266.7)
XYZ	xyz(5.0569, 3.7630, 19.1949)
Luminance	0.0376 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A307B #7B651A

analogous

#1A617B #1A307B #351A7B

triadic

#1A307B #7B1A30 #307B1A

tetradic

#1A307B #7B1A61 #7B651A #1A7B35

square

#1A307B #7B1A61 #7B651A #1A7B35

split-complementary

#1A307B #7B351A #617B1A

monochromatic

#050A19 #0F1C48 #1A307B #2544AE #3A5DD5

Accessibility & contrast

On white

11.98

#1A307B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1A307B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A307B

11.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A307B	#FFFFFF	#000000	##FFFFFF
##1A307B	1.00	11.98	1.75	11.98
#FFFFFF	11.98	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B7E

Deuteranopia (green-blind)

#00327A

Tritanopia (blue-blind)

#004350

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1a307b;
/* rgb */ color: rgb(26, 48, 123);
/* oklch */ color: oklch(34.3% 0.131 266.7);

Tailwind

colors: {
  custom: {
    50: '#6767a2',
    500: '#1a307b',
    950: '#000000',
  },
}

SCSS

$custom: #1a307b;
$custom-light: #6767a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1a307b",
  "rgb": {
    "r": 26,
    "g": 48,
    "b": 123
  },
  "hsl": {
    "h": 226.392,
    "s": 65.101,
    "l": 29.216
  },
  "oklch": {
    "l": 0.34281,
    "c": 0.13051,
    "h": 266.7
  },
  "luminance": 0.03764
}

Semantic roles & 50–950 ramp

primary

#1A307B

secondary

#AF9642

accent

#C240E8

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1A307B

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

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