#10387E#10387E

#10387E is a dark, vivid blue. Relative luminance 0.044; OKLCH L 35.9% C 0.127 H 260.8°. Best body text is #FFFFFF at 11.12:1 contrast (WCAG AA passes).

Color values

HEX	#10387E
RGB	rgb(16, 56, 126)
HSL	hsl(218, 77%, 28%)
HSV	hsv(218, 87%, 49%)
CMYK	cmyk(87.3%, 55.6%, 0%, 50.6%)
CIE-LAB	lab(25.09, 15.02, -43.43)
CIE-LCH	lch(25.09, 45.95, 289.08°)
OKLab	oklab(35.93% -0.0203 -0.1253)
OKLCH	oklch(35.93% 0.127 260.8)
XYZ	xyz(5.3924, 4.4442, 20.3082)
Luminance	0.0445 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10387E #7E5610

analogous

#106F7E #10387E #1F107E

triadic

#10387E #7E1038 #387E10

tetradic

#10387E #7E106F #7E5610 #107E1F

square

#10387E #7E106F #7E5610 #107E1F

split-complementary

#10387E #7E1F10 #6F7E10

monochromatic

#030C1B #092048 #10387E #1750B4 #256AE3

Accessibility & contrast

On white

11.12

#10387E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#10387E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10387E

11.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10387E	#FFFFFF	#000000	##FFFFFF
##10387E	1.00	11.12	1.89	11.12
#FFFFFF	11.12	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004180

Deuteranopia (green-blind)

#00377D

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #10387e;
/* rgb */ color: rgb(16, 56, 126);
/* oklch */ color: oklch(35.9% 0.127 260.8);

Tailwind

colors: {
  custom: {
    50: '#646ea4',
    500: '#10387e',
    950: '#000000',
  },
}

SCSS

$custom: #10387e;
$custom-light: #646ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#10387e",
  "rgb": {
    "r": 16,
    "g": 56,
    "b": 126
  },
  "hsl": {
    "h": 218.182,
    "s": 77.465,
    "l": 27.843
  },
  "oklch": {
    "l": 0.3593,
    "c": 0.12696,
    "h": 260.8
  },
  "luminance": 0.04445
}

Semantic roles & 50–950 ramp

primary

#10387E

secondary

#B48636

accent

#AE34F4

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #10387E

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

Preview Lab → · Contrast checker → · Palette generator →