#153B7D#153B7D

#153B7D is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.7% C 0.120 H 260.6°. Best body text is #FFFFFF at 10.75:1 contrast (WCAG AA passes).

Color values

HEX	#153B7D
RGB	rgb(21, 59, 125)
HSL	hsl(218, 71%, 29%)
HSV	hsv(218, 83%, 49%)
CMYK	cmyk(83.2%, 52.8%, 0%, 51%)
CIE-LAB	lab(26.06, 12.95, -41.22)
CIE-LCH	lch(26.06, 43.20, 287.45°)
OKLab	oklab(36.69% -0.0196 -0.1187)
OKLCH	oklch(36.69% 0.12 260.6)
XYZ	xyz(5.5736, 4.7674, 20.0245)
Luminance	0.0477 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153B7D #7D5715

analogous

#156F7D #153B7D #23157D

triadic

#153B7D #7D153B #3B7D15

tetradic

#153B7D #7D156F #7D5715 #157D23

square

#153B7D #7D156F #7D5715 #157D23

split-complementary

#153B7D #7D2315 #6F7D15

monochromatic

#040C1A #0C2249 #153B7D #1E54B1 #306FDC

Accessibility & contrast

On white

10.75

#153B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#153B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153B7D

10.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153B7D	#FFFFFF	#000000	##FFFFFF
##153B7D	1.00	10.75	1.95	10.75
#FFFFFF	10.75	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10437F

Deuteranopia (green-blind)

#00397C

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #153b7d;
/* rgb */ color: rgb(21, 59, 125);
/* oklch */ color: oklch(36.7% 0.120 260.6);

Tailwind

colors: {
  custom: {
    50: '#6570a3',
    500: '#153b7d',
    950: '#000000',
  },
}

SCSS

$custom: #153b7d;
$custom-light: #6570a3;
$custom-dark: #000000;

JSON

{
  "hex": "#153b7d",
  "rgb": {
    "r": 21,
    "g": 59,
    "b": 125
  },
  "hsl": {
    "h": 218.077,
    "s": 71.233,
    "l": 28.627
  },
  "oklch": {
    "l": 0.36689,
    "c": 0.12029,
    "h": 260.6
  },
  "luminance": 0.04768
}

Semantic roles & 50–950 ramp

primary

#153B7D

secondary

#B2873C

accent

#AC3AEE

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #153B7D

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

Preview Lab → · Contrast checker → · Palette generator →