#153D8C#153D8C

#153D8C is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.4% C 0.139 H 262.0°. Best body text is #FFFFFF at 10.11:1 contrast (WCAG AA passes).

Color values

HEX	#153D8C
RGB	rgb(21, 61, 140)
HSL	hsl(220, 74%, 32%)
HSV	hsv(220, 85%, 55%)
CMYK	cmyk(85%, 56.4%, 0%, 45.1%)
CIE-LAB	lab(27.82, 17.78, -47.72)
CIE-LCH	lch(27.82, 50.93, 290.44°)
OKLab	oklab(38.39% -0.0193 -0.1378)
OKLCH	oklch(38.39% 0.139 262)
XYZ	xyz(6.7099, 5.3895, 25.4925)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153D8C #8C6415

analogous

#15798C #153D8C #29158C

triadic

#153D8C #8C153D #3D8C15

tetradic

#153D8C #8C1579 #8C6415 #158C29

square

#153D8C #8C1579 #8C6415 #158C29

split-complementary

#153D8C #8C2915 #798C15

monochromatic

#050F22 #0D2657 #153D8C #1D54C1 #3A72E1

Accessibility & contrast

On white

10.11

#153D8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#153D8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153D8C

10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153D8C	#FFFFFF	#000000	##FFFFFF
##153D8C	1.00	10.11	2.08	10.11
#FFFFFF	10.11	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00478F

Deuteranopia (green-blind)

#003C8A

Tritanopia (blue-blind)

#00515E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #153d8c;
/* rgb */ color: rgb(21, 61, 140);
/* oklch */ color: oklch(38.4% 0.139 262.0);

Tailwind

colors: {
  custom: {
    50: '#6971ae',
    500: '#153d8c',
    950: '#000000',
  },
}

SCSS

$custom: #153d8c;
$custom-light: #6971ae;
$custom-dark: #000000;

JSON

{
  "hex": "#153d8c",
  "rgb": {
    "r": 21,
    "g": 61,
    "b": 140
  },
  "hsl": {
    "h": 219.832,
    "s": 73.913,
    "l": 31.569
  },
  "oklch": {
    "l": 0.38392,
    "c": 0.13913,
    "h": 262
  },
  "luminance": 0.0539
}

Semantic roles & 50–950 ramp

primary

#153D8C

secondary

#C0943D

accent

#B237F1

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #153D8C

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

Preview Lab → · Contrast checker → · Palette generator →