#153A8E#153A8E

#153A8E is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.9% C 0.146 H 263.2°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#153A8E
RGB	rgb(21, 58, 142)
HSL	hsl(222, 74%, 32%)
HSV	hsv(222, 85%, 56%)
CMYK	cmyk(85.2%, 59.2%, 0%, 44.3%)
CIE-LAB	lab(27.12, 20.70, -50.08)
CIE-LCH	lch(27.12, 54.19, 292.46°)
OKLab	oklab(37.92% -0.0172 -0.1448)
OKLCH	oklch(37.92% 0.146 263.2)
XYZ	xyz(6.7031, 5.1377, 26.2243)
Luminance	0.0514 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153A8E #8E6915

analogous

#15778E #153A8E #2D158E

triadic

#153A8E #8E153A #3A8E15

tetradic

#153A8E #8E1577 #8E6915 #158E2D

square

#153A8E #8E1577 #8E6915 #158E2D

split-complementary

#153A8E #8E2D15 #778E15

monochromatic

#050E23 #0D2459 #153A8E #1D50C3 #3B6EE2

Accessibility & contrast

On white

10.36

#153A8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#153A8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153A8E

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153A8E	#FFFFFF	#000000	##FFFFFF
##153A8E	1.00	10.36	2.03	10.36
#FFFFFF	10.36	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004691

Deuteranopia (green-blind)

#003B8C

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #153a8e;
/* rgb */ color: rgb(21, 58, 142);
/* oklch */ color: oklch(37.9% 0.146 263.2);

Tailwind

colors: {
  custom: {
    50: '#6a6fb0',
    500: '#153a8e',
    950: '#000000',
  },
}

SCSS

$custom: #153a8e;
$custom-light: #6a6fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#153a8e",
  "rgb": {
    "r": 21,
    "g": 58,
    "b": 142
  },
  "hsl": {
    "h": 221.653,
    "s": 74.233,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37921,
    "c": 0.1458,
    "h": 263.2
  },
  "luminance": 0.05139
}

Semantic roles & 50–950 ramp

primary

#153A8E

secondary

#C2993D

accent

#B837F1

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #153A8E

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

Preview Lab → · Contrast checker → · Palette generator →