#153A7B#153A7B

#153A7B is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.3% C 0.119 H 260.8°. Best body text is #FFFFFF at 10.92:1 contrast (WCAG AA passes).

Color values

HEX	#153A7B
RGB	rgb(21, 58, 123)
HSL	hsl(218, 71%, 28%)
HSV	hsv(218, 83%, 48%)
CMYK	cmyk(82.9%, 52.8%, 0%, 51.8%)
CIE-LAB	lab(25.61, 12.82, -40.69)
CIE-LCH	lch(25.61, 42.66, 287.49°)
OKLab	oklab(36.3% -0.019 -0.1172)
OKLCH	oklch(36.3% 0.119 260.8)
XYZ	xyz(5.3962, 4.6150, 19.3414)
Luminance	0.0462 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153A7B #7B5615

analogous

#156D7B #153A7B #23157B

triadic

#153A7B #7B153A #3A7B15

tetradic

#153A7B #7B156D #7B5615 #157B23

square

#153A7B #7B156D #7B5615 #157B23

split-complementary

#153A7B #7B2315 #6D7B15

monochromatic

#040C1A #0C2147 #153A7B #1E53AF #2F6EDB

Accessibility & contrast

On white

10.92

#153A7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#153A7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153A7B

10.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153A7B	#FFFFFF	#000000	##FFFFFF
##153A7B	1.00	10.92	1.92	10.92
#FFFFFF	10.92	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10427D

Deuteranopia (green-blind)

#00387A

Tritanopia (blue-blind)

#004A54

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #153a7b;
/* rgb */ color: rgb(21, 58, 123);
/* oklch */ color: oklch(36.3% 0.119 260.8);

Tailwind

colors: {
  custom: {
    50: '#656fa2',
    500: '#153a7b',
    950: '#000000',
  },
}

SCSS

$custom: #153a7b;
$custom-light: #656fa2;
$custom-dark: #000000;

JSON

{
  "hex": "#153a7b",
  "rgb": {
    "r": 21,
    "g": 58,
    "b": 123
  },
  "hsl": {
    "h": 218.235,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.36295,
    "c": 0.1187,
    "h": 260.8
  },
  "luminance": 0.04616
}

Semantic roles & 50–950 ramp

primary

#153A7B

secondary

#B0863B

accent

#AD3AEE

background

#F6F6FA

surface

#EBECF3

border

#C6C7CD

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #153A7B

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

Preview Lab → · Contrast checker → · Palette generator →