#1A317B#1A317B

#1A317B is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.5% C 0.129 H 266.4°. Best body text is #FFFFFF at 11.87:1 contrast (WCAG AA passes).

Color values

HEX	#1A317B
RGB	rgb(26, 49, 123)
HSL	hsl(226, 65%, 29%)
HSV	hsv(226, 79%, 48%)
CMYK	cmyk(78.9%, 60.2%, 0%, 51.8%)
CIE-LAB	lab(23.15, 19.80, -44.66)
CIE-LCH	lch(23.15, 48.85, 293.90°)
OKLab	oklab(34.49% -0.0081 -0.1289)
OKLCH	oklch(34.49% 0.129 266.4)
XYZ	xyz(5.0982, 3.8457, 19.2087)
Luminance	0.0385 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A317B #7B641A

analogous

#1A627B #1A317B #341A7B

triadic

#1A317B #7B1A31 #317B1A

tetradic

#1A317B #7B1A62 #7B641A #1A7B34

square

#1A317B #7B1A62 #7B641A #1A7B34

split-complementary

#1A317B #7B341A #627B1A

monochromatic

#050A19 #0F1D48 #1A317B #2545AE #3A5FD5

Accessibility & contrast

On white

11.87

#1A317B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1A317B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A317B

11.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A317B	#FFFFFF	#000000	##FFFFFF
##1A317B	1.00	11.87	1.77	11.87
#FFFFFF	11.87	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C7D

Deuteranopia (green-blind)

#00337A

Tritanopia (blue-blind)

#004451

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1a317b;
/* rgb */ color: rgb(26, 49, 123);
/* oklch */ color: oklch(34.5% 0.129 266.4);

Tailwind

colors: {
  custom: {
    50: '#6768a2',
    500: '#1a317b',
    950: '#000000',
  },
}

SCSS

$custom: #1a317b;
$custom-light: #6768a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1a317b",
  "rgb": {
    "r": 26,
    "g": 49,
    "b": 123
  },
  "hsl": {
    "h": 225.773,
    "s": 65.101,
    "l": 29.216
  },
  "oklch": {
    "l": 0.34492,
    "c": 0.12919,
    "h": 266.4
  },
  "luminance": 0.03846
}

Semantic roles & 50–950 ramp

primary

#1A317B

secondary

#AF9542

accent

#C040E8

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1A317B

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

Preview Lab → · Contrast checker → · Palette generator →