#1530B4#1530B4

#1530B4 is a dark, highly saturated blue. Relative luminance 0.056; OKLCH L 39.9% C 0.207 H 266.1°. Best body text is #FFFFFF at 9.93:1 contrast (WCAG AA passes).

Color values

HEX	#1530B4
RGB	rgb(21, 48, 180)
HSL	hsl(230, 79%, 39%)
HSV	hsv(230, 88%, 71%)
CMYK	cmyk(88.3%, 73.3%, 0%, 29.4%)
CIE-LAB	lab(28.29, 41.94, -71.20)
CIE-LCH	lch(28.29, 82.64, 300.50°)
OKLab	oklab(39.89% -0.014 -0.2065)
OKLCH	oklch(39.89% 0.207 266.1)
XYZ	xyz(9.6016, 5.5674, 43.7397)
Luminance	0.0557 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1530B4 #B49915

analogous

#1580B4 #1530B4 #4915B4

triadic

#1530B4 #B41530 #30B415

tetradic

#1530B4 #B41580 #B49915 #15B449

square

#1530B4 #B41580 #B49915 #15B449

split-complementary

#1530B4 #B44915 #80B415

monochromatic

#081346 #0F217D #1530B4 #2142E5 #5871EC

Accessibility & contrast

On white

9.93

#1530B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1530B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1530B4

9.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1530B4	#FFFFFF	#000000	##FFFFFF
##1530B4	1.00	9.93	2.11	9.93
#FFFFFF	9.93	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB8

Deuteranopia (green-blind)

#003BB2

Tritanopia (blue-blind)

#00576F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1530b4;
/* rgb */ color: rgb(21, 48, 180);
/* oklch */ color: oklch(39.9% 0.207 266.1);

Tailwind

colors: {
  custom: {
    50: '#7569cc',
    500: '#1530b4',
    950: '#000000',
  },
}

SCSS

$custom: #1530b4;
$custom-light: #7569cc;
$custom-dark: #000000;

JSON

{
  "hex": "#1530b4",
  "rgb": {
    "r": 21,
    "g": 48,
    "b": 180
  },
  "hsl": {
    "h": 229.811,
    "s": 79.104,
    "l": 39.412
  },
  "oklch": {
    "l": 0.39888,
    "c": 0.20697,
    "h": 266.1
  },
  "luminance": 0.05569
}

Semantic roles & 50–950 ramp

primary

#1530B4

secondary

#CFBA56

accent

#D432F6

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0A0614

muted

#7C7A82

Preview Lab

Preview with #1530B4

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

Preview Lab → · Contrast checker → · Palette generator →