#1A3F80#1A3F80

#1A3F80 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 38.0% C 0.118 H 260.7°. Best body text is #FFFFFF at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#1A3F80
RGB	rgb(26, 63, 128)
HSL	hsl(218, 66%, 30%)
HSV	hsv(218, 80%, 50%)
CMYK	cmyk(79.7%, 50.8%, 0%, 49.8%)
CIE-LAB	lab(27.66, 11.97, -40.51)
CIE-LCH	lch(27.66, 42.24, 286.47°)
OKLab	oklab(38.03% -0.019 -0.1164)
OKLCH	oklch(38.03% 0.118 260.7)
XYZ	xyz(6.0984, 5.3324, 21.1257)
Luminance	0.0533 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3F80 #805B1A

analogous

#1A7280 #1A3F80 #281A80

triadic

#1A3F80 #801A3F #3F801A

tetradic

#1A3F80 #801A72 #805B1A #1A8028

square

#1A3F80 #801A72 #805B1A #1A8028

split-complementary

#1A3F80 #80281A #72801A

monochromatic

#050D1A #10264D #1A3F80 #2458B3 #3D75D8

Accessibility & contrast

On white

10.16

#1A3F80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#1A3F80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3F80

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3F80	#FFFFFF	#000000	##FFFFFF
##1A3F80	1.00	10.16	2.07	10.16
#FFFFFF	10.16	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#194682

Deuteranopia (green-blind)

#003D7F

Tritanopia (blue-blind)

#004F59

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1a3f80;
/* rgb */ color: rgb(26, 63, 128);
/* oklch */ color: oklch(38.0% 0.118 260.7);

Tailwind

colors: {
  custom: {
    50: '#6773a5',
    500: '#1a3f80',
    950: '#000000',
  },
}

SCSS

$custom: #1a3f80;
$custom-light: #6773a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3f80",
  "rgb": {
    "r": 26,
    "g": 63,
    "b": 128
  },
  "hsl": {
    "h": 218.235,
    "s": 66.234,
    "l": 30.196
  },
  "oklch": {
    "l": 0.38032,
    "c": 0.11798,
    "h": 260.7
  },
  "luminance": 0.05333
}

Semantic roles & 50–950 ramp

primary

#1A3F80

secondary

#B48B42

accent

#AB3FE9

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1A3F80

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

Preview Lab → · Contrast checker → · Palette generator →