#153F7A#153F7A

#153F7A is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.4% C 0.111 H 257.8°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#153F7A
RGB	rgb(21, 63, 122)
HSL	hsl(215, 71%, 28%)
HSV	hsv(215, 83%, 48%)
CMYK	cmyk(82.8%, 48.4%, 0%, 52.2%)
CIE-LAB	lab(27.07, 8.89, -37.70)
CIE-LCH	lch(27.07, 38.73, 283.27°)
OKLab	oklab(37.4% -0.0234 -0.1083)
OKLCH	oklch(37.4% 0.111 257.8)
XYZ	xyz(5.5983, 5.1189, 19.1016)
Luminance	0.0512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153F7A #7A5015

analogous

#15717A #153F7A #1E157A

triadic

#153F7A #7A153F #3F7A15

tetradic

#153F7A #7A1571 #7A5015 #157A1E

square

#153F7A #7A1571 #7A5015 #157A1E

split-complementary

#153F7A #7A1E15 #717A15

monochromatic

#040D1A #0C2446 #153F7A #1E5AAE #2E76DB

Accessibility & contrast

On white

10.38

#153F7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#153F7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153F7A

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153F7A	#FFFFFF	#000000	##FFFFFF
##153F7A	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F457C

Deuteranopia (green-blind)

#043C79

Tritanopia (blue-blind)

#004D56

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #153f7a;
/* rgb */ color: rgb(21, 63, 122);
/* oklch */ color: oklch(37.4% 0.111 257.8);

Tailwind

colors: {
  custom: {
    50: '#6473a1',
    500: '#153f7a',
    950: '#000000',
  },
}

SCSS

$custom: #153f7a;
$custom-light: #6473a1;
$custom-dark: #000000;

JSON

{
  "hex": "#153f7a",
  "rgb": {
    "r": 21,
    "g": 63,
    "b": 122
  },
  "hsl": {
    "h": 215.05,
    "s": 70.629,
    "l": 28.039
  },
  "oklch": {
    "l": 0.37395,
    "c": 0.11076,
    "h": 257.8
  },
  "luminance": 0.0512
}

Semantic roles & 50–950 ramp

primary

#153F7A

secondary

#AF7F3B

accent

#A33AED

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080F

muted

#7A7B7E

Preview Lab

Preview with #153F7A

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

Preview Lab → · Contrast checker → · Palette generator →