#10377F#10377F

#10377F is a dark, vivid blue. Relative luminance 0.044; OKLCH L 35.8% C 0.130 H 261.4°. Best body text is #FFFFFF at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#10377F
RGB	rgb(16, 55, 127)
HSL	hsl(219, 78%, 28%)
HSV	hsv(219, 87%, 50%)
CMYK	cmyk(87.4%, 56.7%, 0%, 50.2%)
CIE-LAB	lab(24.87, 16.15, -44.41)
CIE-LCH	lch(24.87, 47.26, 289.99°)
OKLab	oklab(35.79% -0.0195 -0.1282)
OKLCH	oklch(35.79% 0.13 261.4)
XYZ	xyz(5.4093, 4.3742, 20.6338)
Luminance	0.0437 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10377F #7F5810

analogous

#106E7F #10377F #21107F

triadic

#10377F #7F1037 #377F10

tetradic

#10377F #7F106E #7F5810 #107F21

square

#10377F #7F106E #7F5810 #107F21

split-complementary

#10377F #7F2110 #6E7F10

monochromatic

#030C1B #091F49 #10377F #174FB5 #2668E4

Accessibility & contrast

On white

11.20

#10377F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#10377F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10377F

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10377F	#FFFFFF	#000000	##FFFFFF
##10377F	1.00	11.20	1.88	11.20
#FFFFFF	11.20	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004082

Deuteranopia (green-blind)

#00367E

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #10377f;
/* rgb */ color: rgb(16, 55, 127);
/* oklch */ color: oklch(35.8% 0.130 261.4);

Tailwind

colors: {
  custom: {
    50: '#656da5',
    500: '#10377f',
    950: '#000000',
  },
}

SCSS

$custom: #10377f;
$custom-light: #656da5;
$custom-dark: #000000;

JSON

{
  "hex": "#10377f",
  "rgb": {
    "r": 16,
    "g": 55,
    "b": 127
  },
  "hsl": {
    "h": 218.919,
    "s": 77.622,
    "l": 28.039
  },
  "oklch": {
    "l": 0.3579,
    "c": 0.12971,
    "h": 261.4
  },
  "luminance": 0.04375
}

Semantic roles & 50–950 ramp

primary

#10377F

secondary

#B58836

accent

#B134F4

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #10377F

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

Preview Lab → · Contrast checker → · Palette generator →