#273EAF#273EAF

#273EAF is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.4% C 0.181 H 268.3°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#273EAF
RGB	rgb(39, 62, 175)
HSL	hsl(230, 64%, 42%)
HSV	hsv(230, 78%, 69%)
CMYK	cmyk(77.7%, 64.6%, 0%, 31.4%)
CIE-LAB	lab(31.74, 32.56, -62.53)
CIE-LCH	lch(31.74, 70.50, 297.51°)
OKLab	oklab(42.43% -0.0053 -0.1809)
OKLCH	oklch(42.43% 0.181 268.3)
XYZ	xyz(10.2945, 6.9706, 41.3520)
Luminance	0.0697 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273EAF #AF9827

analogous

#2782AF #273EAF #5427AF

triadic

#273EAF #AF273E #3EAF27

tetradic

#273EAF #AF2782 #AF9827 #27AF54

square

#273EAF #AF2782 #AF9827 #27AF54

split-complementary

#273EAF #AF5427 #82AF27

monochromatic

#111B4B #1C2C7D #273EAF #3F58D4 #7184DF

Accessibility & contrast

On white

8.77

#273EAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#273EAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273EAF

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273EAF	#FFFFFF	#000000	##FFFFFF
##273EAF	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B3

Deuteranopia (green-blind)

#0044AD

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #273eaf;
/* rgb */ color: rgb(39, 62, 175);
/* oklch */ color: oklch(42.4% 0.181 268.3);

Tailwind

colors: {
  custom: {
    50: '#7773c8',
    500: '#273eaf',
    950: '#000000',
  },
}

SCSS

$custom: #273eaf;
$custom-light: #7773c8;
$custom-dark: #000000;

JSON

{
  "hex": "#273eaf",
  "rgb": {
    "r": 39,
    "g": 62,
    "b": 175
  },
  "hsl": {
    "h": 229.853,
    "s": 63.551,
    "l": 41.961
  },
  "oklch": {
    "l": 0.42432,
    "c": 0.18097,
    "h": 268.3
  },
  "luminance": 0.06972
}

Semantic roles & 50–950 ramp

primary

#273EAF

secondary

#C6B76B

accent

#CB41E7

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #273EAF

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

Preview Lab → · Contrast checker → · Palette generator →