#153C7B#153C7B

#153C7B is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.8% C 0.116 H 259.7°. Best body text is #FFFFFF at 10.69:1 contrast (WCAG AA passes).

Color values

HEX	#153C7B
RGB	rgb(21, 60, 123)
HSL	hsl(217, 71%, 28%)
HSV	hsv(217, 83%, 48%)
CMYK	cmyk(82.9%, 51.2%, 0%, 51.8%)
CIE-LAB	lab(26.22, 11.41, -39.71)
CIE-LCH	lch(26.22, 41.31, 286.03°)
OKLab	oklab(36.76% -0.0207 -0.1142)
OKLCH	oklch(36.76% 0.116 259.7)
XYZ	xyz(5.4990, 4.8206, 19.3757)
Luminance	0.0482 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153C7B #7B5415

analogous

#156F7B #153C7B #21157B

triadic

#153C7B #7B153C #3C7B15

tetradic

#153C7B #7B156F #7B5415 #157B21

square

#153C7B #7B156F #7B5415 #157B21

split-complementary

#153C7B #7B2115 #6F7B15

monochromatic

#040D1A #0C2247 #153C7B #1E55AF #2F71DB

Accessibility & contrast

On white

10.69

#153C7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#153C7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153C7B

10.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153C7B	#FFFFFF	#000000	##FFFFFF
##153C7B	1.00	10.69	1.96	10.69
#FFFFFF	10.69	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16437D

Deuteranopia (green-blind)

#003A7A

Tritanopia (blue-blind)

#004B55

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #153c7b;
/* rgb */ color: rgb(21, 60, 123);
/* oklch */ color: oklch(36.8% 0.116 259.7);

Tailwind

colors: {
  custom: {
    50: '#6571a2',
    500: '#153c7b',
    950: '#000000',
  },
}

SCSS

$custom: #153c7b;
$custom-light: #6571a2;
$custom-dark: #000000;

JSON

{
  "hex": "#153c7b",
  "rgb": {
    "r": 21,
    "g": 60,
    "b": 123
  },
  "hsl": {
    "h": 217.059,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.36761,
    "c": 0.11608,
    "h": 259.7
  },
  "luminance": 0.04821
}

Semantic roles & 50–950 ramp

primary

#153C7B

secondary

#B0843B

accent

#A93AEE

background

#F6F6FA

surface

#EBECF3

border

#C6C7CD

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #153C7B

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

Preview Lab → · Contrast checker → · Palette generator →