#1531A0#1531A0

#1531A0 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.9% C 0.181 H 266.0°. Best body text is #FFFFFF at 10.61:1 contrast (WCAG AA passes).

Color values

HEX	#1531A0
RGB	rgb(21, 49, 160)
HSL	hsl(228, 77%, 35%)
HSV	hsv(228, 87%, 63%)
CMYK	cmyk(86.9%, 69.4%, 0%, 37.3%)
CIE-LAB	lab(26.43, 33.94, -62.25)
CIE-LCH	lch(26.43, 70.90, 298.60°)
OKLab	oklab(37.92% -0.0127 -0.1805)
OKLCH	oklch(37.92% 0.181 266)
XYZ	xyz(7.7505, 4.8931, 33.7869)
Luminance	0.0489 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1531A0 #A08415

analogous

#1576A0 #1531A0 #3F15A0

triadic

#1531A0 #A01531 #31A015

tetradic

#1531A0 #A01576 #A08415 #15A03F

square

#1531A0 #A01576 #A08415 #15A03F

split-complementary

#1531A0 #A03F15 #76A015

monochromatic

#071034 #0E206A #1531A0 #1C42D6 #4868E7

Accessibility & contrast

On white

10.61

#1531A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#1531A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1531A0

10.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1531A0	#FFFFFF	#000000	##FFFFFF
##1531A0	1.00	10.61	1.98	10.61
#FFFFFF	10.61	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045A3

Deuteranopia (green-blind)

#00389E

Tritanopia (blue-blind)

#005064

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1531a0;
/* rgb */ color: rgb(21, 49, 160);
/* oklch */ color: oklch(37.9% 0.181 266.0);

Tailwind

colors: {
  custom: {
    50: '#7069bd',
    500: '#1531a0',
    950: '#000000',
  },
}

SCSS

$custom: #1531a0;
$custom-light: #7069bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1531a0",
  "rgb": {
    "r": 21,
    "g": 49,
    "b": 160
  },
  "hsl": {
    "h": 227.914,
    "s": 76.796,
    "l": 35.49
  },
  "oklch": {
    "l": 0.37916,
    "c": 0.18092,
    "h": 266
  },
  "luminance": 0.04894
}

Semantic roles & 50–950 ramp

primary

#1531A0

secondary

#C8AE49

accent

#CD34F3

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1531A0

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

Preview Lab → · Contrast checker → · Palette generator →