#153F8E#153F8E

#153F8E is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.0% C 0.139 H 261.5°. Best body text is #FFFFFF at 9.84:1 contrast (WCAG AA passes).

Color values

HEX	#153F8E
RGB	rgb(21, 63, 142)
HSL	hsl(219, 74%, 32%)
HSV	hsv(219, 85%, 56%)
CMYK	cmyk(85.2%, 55.6%, 0%, 44.3%)
CIE-LAB	lab(28.56, 17.21, -47.76)
CIE-LCH	lch(28.56, 50.76, 289.82°)
OKLab	oklab(39% -0.0205 -0.1378)
OKLCH	oklch(39% 0.139 261.5)
XYZ	xyz(6.9675, 5.6666, 26.3125)
Luminance	0.0567 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153F8E #8E6415

analogous

#157B8E #153F8E #28158E

triadic

#153F8E #8E153F #3F8E15

tetradic

#153F8E #8E157B #8E6415 #158E28

square

#153F8E #8E157B #8E6415 #158E28

split-complementary

#153F8E #8E2815 #7B8E15

monochromatic

#051023 #0D2759 #153F8E #1D57C3 #3B75E2

Accessibility & contrast

On white

9.84

#153F8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#153F8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153F8E

9.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153F8E	#FFFFFF	#000000	##FFFFFF
##153F8E	1.00	9.84	2.13	9.84
#FFFFFF	9.84	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004991

Deuteranopia (green-blind)

#003E8C

Tritanopia (blue-blind)

#005360

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #153f8e;
/* rgb */ color: rgb(21, 63, 142);
/* oklch */ color: oklch(39.0% 0.139 261.5);

Tailwind

colors: {
  custom: {
    50: '#6a73b0',
    500: '#153f8e',
    950: '#000000',
  },
}

SCSS

$custom: #153f8e;
$custom-light: #6a73b0;
$custom-dark: #000000;

JSON

{
  "hex": "#153f8e",
  "rgb": {
    "r": 21,
    "g": 63,
    "b": 142
  },
  "hsl": {
    "h": 219.174,
    "s": 74.233,
    "l": 31.961
  },
  "oklch": {
    "l": 0.39002,
    "c": 0.13936,
    "h": 261.5
  },
  "luminance": 0.05667
}

Semantic roles & 50–950 ramp

primary

#153F8E

secondary

#C2943D

accent

#B037F1

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #153F8E

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

Preview Lab → · Contrast checker → · Palette generator →