#153F7D#153F7D

#153F7D is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.6% C 0.115 H 258.6°. Best body text is #FFFFFF at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#153F7D
RGB	rgb(21, 63, 125)
HSL	hsl(216, 71%, 29%)
HSV	hsv(216, 83%, 49%)
CMYK	cmyk(83.2%, 49.6%, 0%, 51%)
CIE-LAB	lab(27.28, 10.14, -39.25)
CIE-LCH	lch(27.28, 40.54, 284.49°)
OKLab	oklab(37.62% -0.0228 -0.1128)
OKLCH	oklch(37.62% 0.115 258.6)
XYZ	xyz(5.7871, 5.1944, 20.0957)
Luminance	0.0520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153F7D #7D5315

analogous

#15737D #153F7D #1F157D

triadic

#153F7D #7D153F #3F7D15

tetradic

#153F7D #7D1573 #7D5315 #157D1F

square

#153F7D #7D1573 #7D5315 #157D1F

split-complementary

#153F7D #7D1F15 #737D15

monochromatic

#040D1A #0C2549 #153F7D #1E59B1 #3076DC

Accessibility & contrast

On white

10.30

#153F7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#153F7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153F7D

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153F7D	#FFFFFF	#000000	##FFFFFF
##153F7D	1.00	10.30	2.04	10.30
#FFFFFF	10.30	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C457F

Deuteranopia (green-blind)

#003C7C

Tritanopia (blue-blind)

#004E58

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #153f7d;
/* rgb */ color: rgb(21, 63, 125);
/* oklch */ color: oklch(37.6% 0.115 258.6);

Tailwind

colors: {
  custom: {
    50: '#6573a3',
    500: '#153f7d',
    950: '#000000',
  },
}

SCSS

$custom: #153f7d;
$custom-light: #6573a3;
$custom-dark: #000000;

JSON

{
  "hex": "#153f7d",
  "rgb": {
    "r": 21,
    "g": 63,
    "b": 125
  },
  "hsl": {
    "h": 215.769,
    "s": 71.233,
    "l": 28.627
  },
  "oklch": {
    "l": 0.37624,
    "c": 0.1151,
    "h": 258.6
  },
  "luminance": 0.05195
}

Semantic roles & 50–950 ramp

primary

#153F7D

secondary

#B2823C

accent

#A53AEE

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06080F

muted

#7A7B7F

Preview Lab

Preview with #153F7D

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

Preview Lab → · Contrast checker → · Palette generator →