#1A3F7D#1A3F7D

#1A3F7D is a dark, moderate blue. Relative luminance 0.053; OKLCH L 37.8% C 0.114 H 260.1°. Best body text is #FFFFFF at 10.24:1 contrast (WCAG AA passes).

Color values

HEX	#1A3F7D
RGB	rgb(26, 63, 125)
HSL	hsl(218, 66%, 30%)
HSV	hsv(218, 79%, 49%)
CMYK	cmyk(79.2%, 49.6%, 0%, 51%)
CIE-LAB	lab(27.45, 10.74, -38.97)
CIE-LCH	lch(27.45, 40.42, 285.41°)
OKLab	oklab(37.8% -0.0195 -0.1119)
OKLCH	oklch(37.8% 0.114 260.1)
XYZ	xyz(5.9038, 5.2546, 20.1012)
Luminance	0.0525 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3F7D #7D581A

analogous

#1A717D #1A3F7D #271A7D

triadic

#1A3F7D #7D1A3F #3F7D1A

tetradic

#1A3F7D #7D1A71 #7D581A #1A7D27

square

#1A3F7D #7D1A71 #7D581A #1A7D27

split-complementary

#1A3F7D #7D271A #717D1A

monochromatic

#050D19 #0F254A #1A3F7D #2559B0 #3B75D6

Accessibility & contrast

On white

10.24

#1A3F7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#1A3F7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3F7D

10.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3F7D	#FFFFFF	#000000	##FFFFFF
##1A3F7D	1.00	10.24	2.05	10.24
#FFFFFF	10.24	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C467F

Deuteranopia (green-blind)

#003D7C

Tritanopia (blue-blind)

#004E58

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1a3f7d;
/* rgb */ color: rgb(26, 63, 125);
/* oklch */ color: oklch(37.8% 0.114 260.1);

Tailwind

colors: {
  custom: {
    50: '#6673a3',
    500: '#1a3f7d',
    950: '#000000',
  },
}

SCSS

$custom: #1a3f7d;
$custom-light: #6673a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3f7d",
  "rgb": {
    "r": 26,
    "g": 63,
    "b": 125
  },
  "hsl": {
    "h": 217.576,
    "s": 65.563,
    "l": 29.608
  },
  "oklch": {
    "l": 0.378,
    "c": 0.1136,
    "h": 260.1
  },
  "luminance": 0.05255
}

Semantic roles & 50–950 ramp

primary

#1A3F7D

secondary

#B18742

accent

#A93FE9

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1A3F7D

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

Preview Lab → · Contrast checker → · Palette generator →