#153A7A#153A7A

#153A7A is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.2% C 0.117 H 260.6°. Best body text is #FFFFFF at 10.95:1 contrast (WCAG AA passes).

Color values

HEX	#153A7A
RGB	rgb(21, 58, 122)
HSL	hsl(218, 71%, 28%)
HSV	hsv(218, 83%, 48%)
CMYK	cmyk(82.8%, 52.5%, 0%, 52.2%)
CIE-LAB	lab(25.53, 12.41, -40.18)
CIE-LCH	lch(25.53, 42.05, 287.16°)
OKLab	oklab(36.21% -0.0192 -0.1157)
OKLCH	oklch(36.21% 0.117 260.6)
XYZ	xyz(5.3339, 4.5900, 19.0134)
Luminance	0.0459 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153A7A #7A5515

analogous

#156C7A #153A7A #23157A

triadic

#153A7A #7A153A #3A7A15

tetradic

#153A7A #7A156C #7A5515 #157A23

square

#153A7A #7A156C #7A5515 #157A23

split-complementary

#153A7A #7A2315 #6C7A15

monochromatic

#040C1A #0C2146 #153A7A #1E53AE #2E6EDB

Accessibility & contrast

On white

10.95

#153A7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#153A7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153A7A

10.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153A7A	#FFFFFF	#000000	##FFFFFF
##153A7A	1.00	10.95	1.92	10.95
#FFFFFF	10.95	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11417C

Deuteranopia (green-blind)

#003879

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #153a7a;
/* rgb */ color: rgb(21, 58, 122);
/* oklch */ color: oklch(36.2% 0.117 260.6);

Tailwind

colors: {
  custom: {
    50: '#646fa1',
    500: '#153a7a',
    950: '#000000',
  },
}

SCSS

$custom: #153a7a;
$custom-light: #646fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#153a7a",
  "rgb": {
    "r": 21,
    "g": 58,
    "b": 122
  },
  "hsl": {
    "h": 218.02,
    "s": 70.629,
    "l": 28.039
  },
  "oklch": {
    "l": 0.36214,
    "c": 0.11724,
    "h": 260.6
  },
  "luminance": 0.04591
}

Semantic roles & 50–950 ramp

primary

#153A7A

secondary

#AF853B

accent

#AC3AED

background

#F6F6FA

surface

#EBECF3

border

#C6C7CD

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #153A7A

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

Preview Lab → · Contrast checker → · Palette generator →