#153B7C#153B7C

#153B7C is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.6% C 0.119 H 260.4°. Best body text is #FFFFFF at 10.78:1 contrast (WCAG AA passes).

Color values

HEX	#153B7C
RGB	rgb(21, 59, 124)
HSL	hsl(218, 71%, 28%)
HSV	hsv(218, 83%, 49%)
CMYK	cmyk(83.1%, 52.4%, 0%, 51.4%)
CIE-LAB	lab(25.99, 12.54, -40.71)
CIE-LCH	lch(25.99, 42.59, 287.12°)
OKLab	oklab(36.61% -0.0197 -0.1172)
OKLCH	oklch(36.61% 0.119 260.4)
XYZ	xyz(5.5100, 4.7419, 19.6898)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153B7C #7C5615

analogous

#156E7C #153B7C #22157C

triadic

#153B7C #7C153B #3B7C15

tetradic

#153B7C #7C156E #7C5615 #157C22

square

#153B7C #7C156E #7C5615 #157C22

split-complementary

#153B7C #7C2215 #6E7C15

monochromatic

#040C1A #0C2248 #153B7C #1E54B0 #306FDC

Accessibility & contrast

On white

10.78

#153B7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#153B7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153B7C

10.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153B7C	#FFFFFF	#000000	##FFFFFF
##153B7C	1.00	10.78	1.95	10.78
#FFFFFF	10.78	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#12427E

Deuteranopia (green-blind)

#00397B

Tritanopia (blue-blind)

#004B55

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #153b7c;
/* rgb */ color: rgb(21, 59, 124);
/* oklch */ color: oklch(36.6% 0.119 260.4);

Tailwind

colors: {
  custom: {
    50: '#6570a2',
    500: '#153b7c',
    950: '#000000',
  },
}

SCSS

$custom: #153b7c;
$custom-light: #6570a2;
$custom-dark: #000000;

JSON

{
  "hex": "#153b7c",
  "rgb": {
    "r": 21,
    "g": 59,
    "b": 124
  },
  "hsl": {
    "h": 217.864,
    "s": 71.034,
    "l": 28.431
  },
  "oklch": {
    "l": 0.36608,
    "c": 0.11885,
    "h": 260.4
  },
  "luminance": 0.04743
}

Semantic roles & 50–950 ramp

primary

#153B7C

secondary

#B1863C

accent

#AB3AEE

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #153B7C

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

Preview Lab → · Contrast checker → · Palette generator →