#153A7C#153A7C

#153A7C is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.4% C 0.120 H 260.9°. Best body text is #FFFFFF at 10.89:1 contrast (WCAG AA passes).

Color values

HEX	#153A7C
RGB	rgb(21, 58, 124)
HSL	hsl(218, 71%, 28%)
HSV	hsv(218, 83%, 49%)
CMYK	cmyk(83.1%, 53.2%, 0%, 51.4%)
CIE-LAB	lab(25.68, 13.24, -41.20)
CIE-LCH	lch(25.68, 43.27, 287.82°)
OKLab	oklab(36.38% -0.0189 -0.1187)
OKLCH	oklch(36.38% 0.12 260.9)
XYZ	xyz(5.4591, 4.6401, 19.6728)
Luminance	0.0464 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153A7C #7C5715

analogous

#156D7C #153A7C #24157C

triadic

#153A7C #7C153A #3A7C15

tetradic

#153A7C #7C156D #7C5715 #157C24

square

#153A7C #7C156D #7C5715 #157C24

split-complementary

#153A7C #7C2415 #6D7C15

monochromatic

#040C1A #0C2248 #153A7C #1E52B0 #306DDC

Accessibility & contrast

On white

10.89

#153A7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#153A7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153A7C

10.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153A7C	#FFFFFF	#000000	##FFFFFF
##153A7C	1.00	10.89	1.93	10.89
#FFFFFF	10.89	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E427E

Deuteranopia (green-blind)

#00387B

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #153a7c;
/* rgb */ color: rgb(21, 58, 124);
/* oklch */ color: oklch(36.4% 0.120 260.9);

Tailwind

colors: {
  custom: {
    50: '#656fa2',
    500: '#153a7c',
    950: '#000000',
  },
}

SCSS

$custom: #153a7c;
$custom-light: #656fa2;
$custom-dark: #000000;

JSON

{
  "hex": "#153a7c",
  "rgb": {
    "r": 21,
    "g": 58,
    "b": 124
  },
  "hsl": {
    "h": 218.447,
    "s": 71.034,
    "l": 28.431
  },
  "oklch": {
    "l": 0.36377,
    "c": 0.12016,
    "h": 260.9
  },
  "luminance": 0.04641
}

Semantic roles & 50–950 ramp

primary

#153A7C

secondary

#B1873C

accent

#AD3AEE

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #153A7C

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

Preview Lab → · Contrast checker → · Palette generator →