#1551CA#1551CA

#1551CA is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.9% C 0.197 H 262.2°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#1551CA
RGB	rgb(21, 81, 202)
HSL	hsl(220, 81%, 44%)
HSV	hsv(220, 90%, 79%)
CMYK	cmyk(89.6%, 59.9%, 0%, 20.8%)
CIE-LAB	lab(38.39, 29.05, -67.53)
CIE-LCH	lch(38.39, 73.52, 293.28°)
OKLab	oklab(47.93% -0.0267 -0.1956)
OKLCH	oklch(47.93% 0.197 262.2)
XYZ	xyz(13.9085, 10.3067, 57.1220)
Luminance	0.1031 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1551CA #CA8E15

analogous

#15ABCA #1551CA #3315CA

triadic

#1551CA #CA1551 #51CA15

tetradic

#1551CA #CA15AB #CA8E15 #15CA33

square

#1551CA #CA15AB #CA8E15 #15CA33

split-complementary

#1551CA #CA3315 #ABCA15

monochromatic

#09255B #0F3B93 #1551CA #326FEA #6A96EF

Accessibility & contrast

On white

6.86

#1551CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#1551CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1551CA

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1551CA	#FFFFFF	#000000	##FFFFFF
##1551CA	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063CE

Deuteranopia (green-blind)

#0053C8

Tritanopia (blue-blind)

#007085

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1551ca;
/* rgb */ color: rgb(21, 81, 202);
/* oklch */ color: oklch(47.9% 0.197 262.2);

Tailwind

colors: {
  custom: {
    50: '#7981db',
    500: '#1551ca',
    950: '#000000',
  },
}

SCSS

$custom: #1551ca;
$custom-light: #7981db;
$custom-dark: #000000;

JSON

{
  "hex": "#1551ca",
  "rgb": {
    "r": 21,
    "g": 81,
    "b": 202
  },
  "hsl": {
    "h": 220.11,
    "s": 81.166,
    "l": 43.725
  },
  "oklch": {
    "l": 0.47934,
    "c": 0.19738,
    "h": 262.2
  },
  "luminance": 0.10309
}

Semantic roles & 50–950 ramp

primary

#1551CA

secondary

#D5B066

accent

#B530F8

background

#F8F7FD

surface

#EFEEFB

border

#CAC9D4

text

#0B0A15

muted

#7C7C83

Preview Lab

Preview with #1551CA

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

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