#1A51B3#1A51B3

#1A51B3 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.1% C 0.166 H 261.0°. Best body text is #FFFFFF at 7.31:1 contrast (WCAG AA passes).

Color values

HEX	#1A51B3
RGB	rgb(26, 81, 179)
HSL	hsl(218, 75%, 40%)
HSV	hsv(218, 85%, 70%)
CMYK	cmyk(85.5%, 54.7%, 0%, 29.8%)
CIE-LAB	lab(36.66, 20.31, -56.88)
CIE-LCH	lch(36.66, 60.40, 289.65°)
OKLab	oklab(46.09% -0.026 -0.1642)
OKLCH	oklch(46.09% 0.166 261)
XYZ	xyz(11.5022, 9.3577, 43.8391)
Luminance	0.0936 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A51B3 #B37C1A

analogous

#1A9EB3 #1A51B3 #2F1AB3

triadic

#1A51B3 #B31A51 #51B31A

tetradic

#1A51B3 #B31A9E #B37C1A #1AB32F

square

#1A51B3 #B31A9E #B37C1A #1AB32F

split-complementary

#1A51B3 #B32F1A #9EB31A

monochromatic

#0A2148 #12397E #1A51B3 #2A6CE0 #6091E8

Accessibility & contrast

On white

7.31

#1A51B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#1A51B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A51B3

7.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A51B3	#FFFFFF	#000000	##FFFFFF
##1A51B3	1.00	7.31	2.87	7.31
#FFFFFF	7.31	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DB6

Deuteranopia (green-blind)

#0050B1

Tritanopia (blue-blind)

#00697A

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1a51b3;
/* rgb */ color: rgb(26, 81, 179);
/* oklch */ color: oklch(46.1% 0.166 261.0);

Tailwind

colors: {
  custom: {
    50: '#7381ca',
    500: '#1a51b3',
    950: '#000000',
  },
}

SCSS

$custom: #1a51b3;
$custom-light: #7381ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1a51b3",
  "rgb": {
    "r": 26,
    "g": 81,
    "b": 179
  },
  "hsl": {
    "h": 218.431,
    "s": 74.634,
    "l": 40.196
  },
  "oklch": {
    "l": 0.46094,
    "c": 0.16629,
    "h": 261
  },
  "luminance": 0.09359
}

Semantic roles & 50–950 ramp

primary

#1A51B3

secondary

#CCA45D

accent

#AE37F1

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1A51B3

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

Preview Lab → · Contrast checker → · Palette generator →