#273BA5#273BA5

#273BA5 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.9% C 0.171 H 269.0°. Best body text is #FFFFFF at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#273BA5
RGB	rgb(39, 59, 165)
HSL	hsl(230, 62%, 40%)
HSV	hsv(230, 76%, 65%)
CMYK	cmyk(76.4%, 64.2%, 0%, 35.3%)
CIE-LAB	lab(30.10, 30.80, -59.23)
CIE-LCH	lch(30.10, 66.76, 297.48°)
OKLab	oklab(40.95% -0.0031 -0.1713)
OKLCH	oklch(40.95% 0.171 269)
XYZ	xyz(9.1899, 6.2749, 36.3169)
Luminance	0.0628 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273BA5 #A59127

analogous

#277AA5 #273BA5 #5227A5

triadic

#273BA5 #A5273B #3BA527

tetradic

#273BA5 #A5277A #A59127 #27A552

square

#273BA5 #A5277A #A59127 #27A552

split-complementary

#273BA5 #A55227 #7AA527

monochromatic

#101842 #1B2974 #273BA5 #3951D0 #6A7DDC

Accessibility & contrast

On white

9.31

#273BA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#273BA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273BA5

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273BA5	#FFFFFF	#000000	##FFFFFF
##273BA5	1.00	9.31	2.26	9.31
#FFFFFF	9.31	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA8

Deuteranopia (green-blind)

#0041A3

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #273ba5;
/* rgb */ color: rgb(39, 59, 165);
/* oklch */ color: oklch(40.9% 0.171 269.0);

Tailwind

colors: {
  custom: {
    50: '#7570c1',
    500: '#273ba5',
    950: '#000000',
  },
}

SCSS

$custom: #273ba5;
$custom-light: #7570c1;
$custom-dark: #000000;

JSON

{
  "hex": "#273ba5",
  "rgb": {
    "r": 39,
    "g": 59,
    "b": 165
  },
  "hsl": {
    "h": 230.476,
    "s": 61.765,
    "l": 40
  },
  "oklch": {
    "l": 0.40947,
    "c": 0.17128,
    "h": 269
  },
  "luminance": 0.06276
}

Semantic roles & 50–950 ramp

primary

#273BA5

secondary

#C2B466

accent

#CB43E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #273BA5

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

Preview Lab → · Contrast checker → · Palette generator →