#153C8E#153C8E

#153C8E is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.3% C 0.143 H 262.6°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#153C8E
RGB	rgb(21, 60, 142)
HSL	hsl(221, 74%, 32%)
HSV	hsv(221, 85%, 56%)
CMYK	cmyk(85.2%, 57.7%, 0%, 44.3%)
CIE-LAB	lab(27.69, 19.30, -49.16)
CIE-LCH	lch(27.69, 52.81, 291.44°)
OKLab	oklab(38.35% -0.0185 -0.142)
OKLCH	oklch(38.35% 0.143 262.6)
XYZ	xyz(6.8058, 5.3433, 26.2586)
Luminance	0.0534 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153C8E #8E6715

analogous

#15798E #153C8E #2B158E

triadic

#153C8E #8E153C #3C8E15

tetradic

#153C8E #8E1579 #8E6715 #158E2B

square

#153C8E #8E1579 #8E6715 #158E2B

split-complementary

#153C8E #8E2B15 #798E15

monochromatic

#050F23 #0D2559 #153C8E #1D53C3 #3B71E2

Accessibility & contrast

On white

10.15

#153C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#153C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153C8E

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153C8E	#FFFFFF	#000000	##FFFFFF
##153C8E	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004791

Deuteranopia (green-blind)

#003C8C

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #153c8e;
/* rgb */ color: rgb(21, 60, 142);
/* oklch */ color: oklch(38.3% 0.143 262.6);

Tailwind

colors: {
  custom: {
    50: '#6a71b0',
    500: '#153c8e',
    950: '#000000',
  },
}

SCSS

$custom: #153c8e;
$custom-light: #6a71b0;
$custom-dark: #000000;

JSON

{
  "hex": "#153c8e",
  "rgb": {
    "r": 21,
    "g": 60,
    "b": 142
  },
  "hsl": {
    "h": 220.661,
    "s": 74.233,
    "l": 31.961
  },
  "oklch": {
    "l": 0.38348,
    "c": 0.14323,
    "h": 262.6
  },
  "luminance": 0.05344
}

Semantic roles & 50–950 ramp

primary

#153C8E

secondary

#C2973D

accent

#B537F1

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #153C8E

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

Preview Lab → · Contrast checker → · Palette generator →