#153D8F#153D8F

#153D8F is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.7% C 0.143 H 262.4°. Best body text is #FFFFFF at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#153D8F
RGB	rgb(21, 61, 143)
HSL	hsl(220, 74%, 32%)
HSV	hsv(220, 85%, 56%)
CMYK	cmyk(85.3%, 57.3%, 0%, 43.9%)
CIE-LAB	lab(28.06, 19.02, -49.18)
CIE-LCH	lch(28.06, 52.73, 291.14°)
OKLab	oklab(38.65% -0.0191 -0.1421)
OKLCH	oklch(38.65% 0.143 262.4)
XYZ	xyz(6.9341, 5.4792, 26.6734)
Luminance	0.0548 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153D8F #8F6715

analogous

#157A8F #153D8F #2A158F

triadic

#153D8F #8F153D #3D8F15

tetradic

#153D8F #8F157A #8F6715 #158F2A

square

#153D8F #8F157A #8F6715 #158F2A

split-complementary

#153D8F #8F2A15 #7A8F15

monochromatic

#050F24 #0D265A #153D8F #1D54C4 #3C73E2

Accessibility & contrast

On white

10.02

#153D8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#153D8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153D8F

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153D8F	#FFFFFF	#000000	##FFFFFF
##153D8F	1.00	10.02	2.10	10.02
#FFFFFF	10.02	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004892

Deuteranopia (green-blind)

#003D8D

Tritanopia (blue-blind)

#005260

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #153d8f;
/* rgb */ color: rgb(21, 61, 143);
/* oklch */ color: oklch(38.7% 0.143 262.4);

Tailwind

colors: {
  custom: {
    50: '#6a71b0',
    500: '#153d8f',
    950: '#000000',
  },
}

SCSS

$custom: #153d8f;
$custom-light: #6a71b0;
$custom-dark: #000000;

JSON

{
  "hex": "#153d8f",
  "rgb": {
    "r": 21,
    "g": 61,
    "b": 143
  },
  "hsl": {
    "h": 220.328,
    "s": 74.39,
    "l": 32.157
  },
  "oklch": {
    "l": 0.38651,
    "c": 0.14335,
    "h": 262.4
  },
  "luminance": 0.0548
}

Semantic roles & 50–950 ramp

primary

#153D8F

secondary

#C2973E

accent

#B437F1

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080711

muted

#7A7A80

Preview Lab

Preview with #153D8F

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

Preview Lab → · Contrast checker → · Palette generator →