#10255A#10255A

#10255A is a dark, moderate blue. Relative luminance 0.022; OKLCH L 28.4% C 0.099 H 264.5°. Best body text is #FFFFFF at 14.64:1 contrast (WCAG AA passes).

Color values

HEX	#10255A
RGB	rgb(16, 37, 90)
HSL	hsl(223, 70%, 21%)
HSV	hsv(223, 82%, 35%)
CMYK	cmyk(82.2%, 58.9%, 0%, 64.7%)
CIE-LAB	lab(16.36, 13.45, -34.28)
CIE-LCH	lch(16.36, 36.82, 291.43°)
OKLab	oklab(28.38% -0.0095 -0.0988)
OKLCH	oklch(28.38% 0.099 264.5)
XYZ	xyz(2.7201, 2.1712, 9.9466)
Luminance	0.0217 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10255A #5A4510

analogous

#104A5A #10255A #20105A

triadic

#10255A #5A1025 #255A10

tetradic

#10255A #5A104A #5A4510 #105A20

square

#10255A #5A104A #5A4510 #105A20

split-complementary

#10255A #5A2010 #4A5A10

monochromatic

#050B1A #071026 #10255A #193A8E #2250C2

Accessibility & contrast

On white

14.64

#10255A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#10255A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10255A

14.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10255A	#FFFFFF	#000000	##FFFFFF
##10255A	1.00	14.64	1.43	14.64
#FFFFFF	14.64	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C5C

Deuteranopia (green-blind)

#002559

Tritanopia (blue-blind)

#00323B

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #10255a;
/* rgb */ color: rgb(16, 37, 90);
/* oklch */ color: oklch(28.4% 0.099 264.5);

Tailwind

colors: {
  custom: {
    50: '#5b5f89',
    500: '#10255a',
    950: '#000000',
  },
}

SCSS

$custom: #10255a;
$custom-light: #5b5f89;
$custom-dark: #000000;

JSON

{
  "hex": "#10255a",
  "rgb": {
    "r": 16,
    "g": 37,
    "b": 90
  },
  "hsl": {
    "h": 222.973,
    "s": 69.811,
    "l": 20.784
  },
  "oklch": {
    "l": 0.2838,
    "c": 0.09928,
    "h": 264.5
  },
  "luminance": 0.02171
}

Semantic roles & 50–950 ramp

primary

#10255A

secondary

#937833

accent

#BA3BED

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#04040B

muted

#79797C

Preview Lab

Preview with #10255A

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

Preview Lab → · Contrast checker → · Palette generator →