#1A3379#1A3379

#1A3379 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 34.7% C 0.124 H 265.4°. Best body text is #FFFFFF at 11.71:1 contrast (WCAG AA passes).

Color values

HEX	#1A3379
RGB	rgb(26, 51, 121)
HSL	hsl(224, 65%, 29%)
HSV	hsv(224, 79%, 47%)
CMYK	cmyk(78.5%, 57.9%, 0%, 52.5%)
CIE-LAB	lab(23.56, 17.56, -42.73)
CIE-LCH	lch(23.56, 46.20, 292.34°)
OKLab	oklab(34.75% -0.0098 -0.1232)
OKLCH	oklch(34.75% 0.124 265.4)
XYZ	xyz(5.0598, 3.9672, 18.5845)
Luminance	0.0397 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3379 #79601A

analogous

#1A6379 #1A3379 #311A79

triadic

#1A3379 #791A33 #33791A

tetradic

#1A3379 #791A63 #79601A #1A7931

square

#1A3379 #791A63 #79601A #1A7931

split-complementary

#1A3379 #79311A #63791A

monochromatic

#050B19 #0F1E47 #1A3379 #2548AB #3962D4

Accessibility & contrast

On white

11.71

#1A3379 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1A3379 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3379

11.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3379	#FFFFFF	#000000	##FFFFFF
##1A3379	1.00	11.71	1.79	11.71
#FFFFFF	11.71	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7B

Deuteranopia (green-blind)

#003478

Tritanopia (blue-blind)

#004450

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1a3379;
/* rgb */ color: rgb(26, 51, 121);
/* oklch */ color: oklch(34.7% 0.124 265.4);

Tailwind

colors: {
  custom: {
    50: '#666aa0',
    500: '#1a3379',
    950: '#000000',
  },
}

SCSS

$custom: #1a3379;
$custom-light: #666aa0;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3379",
  "rgb": {
    "r": 26,
    "g": 51,
    "b": 121
  },
  "hsl": {
    "h": 224.211,
    "s": 64.626,
    "l": 28.824
  },
  "oklch": {
    "l": 0.34746,
    "c": 0.12361,
    "h": 265.4
  },
  "luminance": 0.03968
}

Semantic roles & 50–950 ramp

primary

#1A3379

secondary

#AD9141

accent

#BC40E8

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07060F

muted

#7A7A7E

Preview Lab

Preview with #1A3379

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

Preview Lab → · Contrast checker → · Palette generator →