#10307F#10307F

#10307F is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.3% C 0.139 H 263.8°. Best body text is #FFFFFF at 11.99:1 contrast (WCAG AA passes).

Color values

HEX	#10307F
RGB	rgb(16, 48, 127)
HSL	hsl(223, 78%, 28%)
HSV	hsv(223, 87%, 50%)
CMYK	cmyk(87.4%, 62.2%, 0%, 50.2%)
CIE-LAB	lab(22.85, 21.14, -47.71)
CIE-LCH	lch(22.85, 52.18, 293.90°)
OKLab	oklab(34.27% -0.015 -0.1381)
OKLCH	oklch(34.27% 0.139 263.8)
XYZ	xyz(5.1000, 3.7557, 20.5307)
Luminance	0.0376 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10307F #7F5F10

analogous

#10677F #10307F #28107F

triadic

#10307F #7F1030 #307F10

tetradic

#10307F #7F1067 #7F5F10 #107F28

square

#10307F #7F1067 #7F5F10 #107F28

split-complementary

#10307F #7F2810 #677F10

monochromatic

#030A1B #091B49 #10307F #1745B5 #265DE4

Accessibility & contrast

On white

11.99

#10307F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#10307F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10307F

11.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10307F	#FFFFFF	#000000	##FFFFFF
##10307F	1.00	11.99	1.75	11.99
#FFFFFF	11.99	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C82

Deuteranopia (green-blind)

#00327D

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #10307f;
/* rgb */ color: rgb(16, 48, 127);
/* oklch */ color: oklch(34.3% 0.139 263.8);

Tailwind

colors: {
  custom: {
    50: '#6567a5',
    500: '#10307f',
    950: '#000000',
  },
}

SCSS

$custom: #10307f;
$custom-light: #6567a5;
$custom-dark: #000000;

JSON

{
  "hex": "#10307f",
  "rgb": {
    "r": 16,
    "g": 48,
    "b": 127
  },
  "hsl": {
    "h": 222.703,
    "s": 77.622,
    "l": 28.039
  },
  "oklch": {
    "l": 0.34266,
    "c": 0.13888,
    "h": 263.8
  },
  "luminance": 0.03756
}

Semantic roles & 50–950 ramp

primary

#10307F

secondary

#B59036

accent

#BD34F4

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #10307F

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

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