#273CA5#273CA5

#273CA5 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.1% C 0.170 H 268.7°. Best body text is #FFFFFF at 9.23:1 contrast (WCAG AA passes).

Color values

HEX	#273CA5
RGB	rgb(39, 60, 165)
HSL	hsl(230, 62%, 40%)
HSV	hsv(230, 76%, 65%)
CMYK	cmyk(76.4%, 63.6%, 0%, 35.3%)
CIE-LAB	lab(30.35, 30.14, -58.81)
CIE-LCH	lch(30.35, 66.09, 297.13°)
OKLab	oklab(41.13% -0.0038 -0.17)
OKLCH	oklch(41.13% 0.17 268.7)
XYZ	xyz(9.2417, 6.3787, 36.3342)
Luminance	0.0638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273CA5 #A59027

analogous

#277BA5 #273CA5 #5127A5

triadic

#273CA5 #A5273C #3CA527

tetradic

#273CA5 #A5277B #A59027 #27A551

square

#273CA5 #A5277B #A59027 #27A551

split-complementary

#273CA5 #A55127 #7BA527

monochromatic

#101842 #1B2A74 #273CA5 #3952D0 #6A7DDC

Accessibility & contrast

On white

9.23

#273CA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#273CA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273CA5

9.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273CA5	#FFFFFF	#000000	##FFFFFF
##273CA5	1.00	9.23	2.28	9.23
#FFFFFF	9.23	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA8

Deuteranopia (green-blind)

#0042A3

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #273ca5;
/* rgb */ color: rgb(39, 60, 165);
/* oklch */ color: oklch(41.1% 0.170 268.7);

Tailwind

colors: {
  custom: {
    50: '#7571c1',
    500: '#273ca5',
    950: '#000000',
  },
}

SCSS

$custom: #273ca5;
$custom-light: #7571c1;
$custom-dark: #000000;

JSON

{
  "hex": "#273ca5",
  "rgb": {
    "r": 39,
    "g": 60,
    "b": 165
  },
  "hsl": {
    "h": 230,
    "s": 61.765,
    "l": 40
  },
  "oklch": {
    "l": 0.41133,
    "c": 0.17007,
    "h": 268.7
  },
  "luminance": 0.0638
}

Semantic roles & 50–950 ramp

primary

#273CA5

secondary

#C2B366

accent

#CA43E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #273CA5

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

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