#10274B#10274B

#10274B is a dark, moderate blue. Relative luminance 0.021; OKLCH L 27.6% C 0.073 H 259.1°. Best body text is #FFFFFF at 14.85:1 contrast (WCAG AA passes).

Color values

HEX	#10274B
RGB	rgb(16, 39, 75)
HSL	hsl(217, 65%, 18%)
HSV	hsv(217, 79%, 29%)
CMYK	cmyk(78.7%, 48%, 0%, 70.6%)
CIE-LAB	lab(15.85, 5.42, -24.98)
CIE-LCH	lch(15.85, 25.56, 282.24°)
OKLab	oklab(27.62% -0.0138 -0.0714)
OKLCH	oklch(27.62% 0.073 259.1)
XYZ	xyz(2.2087, 2.0690, 6.9382)
Luminance	0.0207 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10274B #4B3410

analogous

#10444B #10274B #16104B

triadic

#10274B #4B1027 #274B10

tetradic

#10274B #4B1044 #4B3410 #104B16

square

#10274B #4B1044 #4B3410 #104B16

split-complementary

#10274B #4B1610 #444B10

monochromatic

#050D19 #050D19 #10274B #1B417D #265BB0

Accessibility & contrast

On white

14.85

#10274B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#10274B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10274B

14.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10274B	#FFFFFF	#000000	##FFFFFF
##10274B	1.00	14.85	1.41	14.85
#FFFFFF	14.85	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#152A4C

Deuteranopia (green-blind)

#0B254A

Tritanopia (blue-blind)

#002F35

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #10274b;
/* rgb */ color: rgb(16, 39, 75);
/* oklch */ color: oklch(27.6% 0.073 259.1);

Tailwind

colors: {
  custom: {
    50: '#57607d',
    500: '#10274b',
    950: '#000000',
  },
}

SCSS

$custom: #10274b;
$custom-light: #57607d;
$custom-dark: #000000;

JSON

{
  "hex": "#10274b",
  "rgb": {
    "r": 16,
    "g": 39,
    "b": 75
  },
  "hsl": {
    "h": 216.61,
    "s": 64.835,
    "l": 17.843
  },
  "oklch": {
    "l": 0.27615,
    "c": 0.07273,
    "h": 259.1
  },
  "luminance": 0.02069
}

Semantic roles & 50–950 ramp

primary

#10274B

secondary

#856532

accent

#A640E8

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#03040A

muted

#78797C

Preview Lab

Preview with #10274B

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

Preview Lab → · Contrast checker → · Palette generator →