#273FAE#273FAE

#273FAE is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.5% C 0.178 H 268.1°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#273FAE
RGB	rgb(39, 63, 174)
HSL	hsl(229, 63%, 42%)
HSV	hsv(229, 78%, 68%)
CMYK	cmyk(77.6%, 63.8%, 0%, 31.8%)
CIE-LAB	lab(31.90, 31.54, -61.67)
CIE-LCH	lch(31.90, 69.26, 297.09°)
OKLab	oklab(42.52% -0.0059 -0.1784)
OKLCH	oklch(42.52% 0.178 268.1)
XYZ	xyz(10.2515, 7.0412, 40.8550)
Luminance	0.0704 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273FAE #AE9627

analogous

#2783AE #273FAE #5227AE

triadic

#273FAE #AE273F #3FAE27

tetradic

#273FAE #AE2783 #AE9627 #27AE52

square

#273FAE #AE2783 #AE9627 #27AE52

split-complementary

#273FAE #AE5227 #83AE27

monochromatic

#111B4A #1C2D7C #273FAE #3E59D4 #7084DF

Accessibility & contrast

On white

8.72

#273FAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#273FAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273FAE

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273FAE	#FFFFFF	#000000	##FFFFFF
##273FAE	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B2

Deuteranopia (green-blind)

#0045AC

Tritanopia (blue-blind)

#005C70

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #273fae;
/* rgb */ color: rgb(39, 63, 174);
/* oklch */ color: oklch(42.5% 0.178 268.1);

Tailwind

colors: {
  custom: {
    50: '#7774c7',
    500: '#273fae',
    950: '#000000',
  },
}

SCSS

$custom: #273fae;
$custom-light: #7774c7;
$custom-dark: #000000;

JSON

{
  "hex": "#273fae",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 174
  },
  "hsl": {
    "h": 229.333,
    "s": 63.38,
    "l": 41.765
  },
  "oklch": {
    "l": 0.42523,
    "c": 0.17846,
    "h": 268.1
  },
  "luminance": 0.07042
}

Semantic roles & 50–950 ramp

primary

#273FAE

secondary

#C6B66B

accent

#C941E6

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #273FAE

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

Preview Lab → · Contrast checker → · Palette generator →