#15437B#15437B

#15437B is a dark, moderate cyan. Relative luminance 0.056; OKLCH L 38.4% C 0.107 H 255.6°. Best body text is #FFFFFF at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#15437B
RGB	rgb(21, 67, 123)
HSL	hsl(213, 71%, 28%)
HSV	hsv(213, 83%, 48%)
CMYK	cmyk(82.9%, 45.5%, 0%, 51.8%)
CIE-LAB	lab(28.39, 6.54, -36.21)
CIE-LCH	lch(28.39, 36.80, 280.23°)
OKLab	oklab(38.44% -0.0267 -0.1038)
OKLCH	oklch(38.44% 0.107 255.6)
XYZ	xyz(5.8902, 5.6031, 19.5061)
Luminance	0.0560 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15437B #7B4D15

analogous

#15767B #15437B #1A157B

triadic

#15437B #7B1543 #437B15

tetradic

#15437B #7B1576 #7B4D15 #157B1A

square

#15437B #7B1576 #7B4D15 #157B1A

split-complementary

#15437B #7B1A15 #767B15

monochromatic

#040E1A #0C2747 #15437B #1E5FAF #2F7DDB

Accessibility & contrast

On white

9.90

#15437B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#15437B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15437B

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15437B	#FFFFFF	#000000	##FFFFFF
##15437B	1.00	9.90	2.12	9.90
#FFFFFF	9.90	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26487D

Deuteranopia (green-blind)

#123F7A

Tritanopia (blue-blind)

#005059

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #15437b;
/* rgb */ color: rgb(21, 67, 123);
/* oklch */ color: oklch(38.4% 0.107 255.6);

Tailwind

colors: {
  custom: {
    50: '#6476a1',
    500: '#15437b',
    950: '#000000',
  },
}

SCSS

$custom: #15437b;
$custom-light: #6476a1;
$custom-dark: #000000;

JSON

{
  "hex": "#15437b",
  "rgb": {
    "r": 21,
    "g": 67,
    "b": 123
  },
  "hsl": {
    "h": 212.941,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.38435,
    "c": 0.10717,
    "h": 255.6
  },
  "luminance": 0.05604
}

Semantic roles & 50–950 ramp

primary

#15437B

secondary

#B07C3B

accent

#9D3AEE

background

#F6F7FA

surface

#EBEDF3

border

#C6C8CD

text

#06080F

muted

#7A7B7F

Preview Lab

Preview with #15437B

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

Preview Lab → · Contrast checker → · Palette generator →