#10357F#10357F

#10357F is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.3% C 0.132 H 262.1°. Best body text is #FFFFFF at 11.43:1 contrast (WCAG AA passes).

Color values

HEX	#10357F
RGB	rgb(16, 53, 127)
HSL	hsl(220, 78%, 28%)
HSV	hsv(220, 87%, 50%)
CMYK	cmyk(87.4%, 58.3%, 0%, 50.2%)
CIE-LAB	lab(24.28, 17.58, -45.37)
CIE-LCH	lch(24.28, 48.65, 291.18°)
OKLab	oklab(35.35% -0.0181 -0.1311)
OKLCH	oklch(35.35% 0.132 262.1)
XYZ	xyz(5.3162, 4.1880, 20.6027)
Luminance	0.0419 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10357F #7F5A10

analogous

#106C7F #10357F #22107F

triadic

#10357F #7F1035 #357F10

tetradic

#10357F #7F106C #7F5A10 #107F22

square

#10357F #7F106C #7F5A10 #107F22

split-complementary

#10357F #7F2210 #6C7F10

monochromatic

#030B1B #091E49 #10357F #174CB5 #2665E4

Accessibility & contrast

On white

11.43

#10357F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#10357F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10357F

11.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10357F	#FFFFFF	#000000	##FFFFFF
##10357F	1.00	11.43	1.84	11.43
#FFFFFF	11.43	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F82

Deuteranopia (green-blind)

#00357E

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #10357f;
/* rgb */ color: rgb(16, 53, 127);
/* oklch */ color: oklch(35.3% 0.132 262.1);

Tailwind

colors: {
  custom: {
    50: '#656ba5',
    500: '#10357f',
    950: '#000000',
  },
}

SCSS

$custom: #10357f;
$custom-light: #656ba5;
$custom-dark: #000000;

JSON

{
  "hex": "#10357f",
  "rgb": {
    "r": 16,
    "g": 53,
    "b": 127
  },
  "hsl": {
    "h": 220,
    "s": 77.622,
    "l": 28.039
  },
  "oklch": {
    "l": 0.35345,
    "c": 0.13234,
    "h": 262.1
  },
  "luminance": 0.04189
}

Semantic roles & 50–950 ramp

primary

#10357F

secondary

#B58B36

accent

#B434F4

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #10357F

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

Preview Lab → · Contrast checker → · Palette generator →