#3457B3#3457B3

#3457B3 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.3% C 0.152 H 265.4°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#3457B3
RGB	rgb(52, 87, 179)
HSL	hsl(223, 55%, 45%)
HSV	hsv(223, 71%, 70%)
CMYK	cmyk(70.9%, 51.4%, 0%, 29.8%)
CIE-LAB	lab(39.24, 19.23, -52.67)
CIE-LCH	lch(39.24, 56.07, 290.06°)
OKLab	oklab(48.31% -0.0122 -0.1513)
OKLCH	oklch(48.31% 0.152 265.4)
XYZ	xyz(12.9582, 10.7998, 44.0407)
Luminance	0.1080 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3457B3 #B39034

analogous

#3496B3 #3457B3 #5134B3

triadic

#3457B3 #B33457 #57B334

tetradic

#3457B3 #B33496 #B39034 #34B351

square

#3457B3 #B33496 #B39034 #34B351

split-complementary

#3457B3 #B35134 #96B334

monochromatic

#182954 #264084 #3457B3 #5677CE #869DDC

Accessibility & contrast

On white

6.65

#3457B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#3457B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3457B3

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3457B3	#FFFFFF	#000000	##FFFFFF
##3457B3	1.00	6.65	3.16	6.65
#FFFFFF	6.65	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E63B6

Deuteranopia (green-blind)

#0057B1

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3457b3;
/* rgb */ color: rgb(52, 87, 179);
/* oklch */ color: oklch(48.3% 0.152 265.4);

Tailwind

colors: {
  custom: {
    50: '#7b85ca',
    500: '#3457b3',
    950: '#000000',
  },
}

SCSS

$custom: #3457b3;
$custom-light: #7b85ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3457b3",
  "rgb": {
    "r": 52,
    "g": 87,
    "b": 179
  },
  "hsl": {
    "h": 223.465,
    "s": 54.978,
    "l": 45.294
  },
  "oklch": {
    "l": 0.48307,
    "c": 0.15182,
    "h": 265.4
  },
  "luminance": 0.10801
}

Semantic roles & 50–950 ramp

primary

#3457B3

secondary

#C5B27D

accent

#B549DE

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3457B3

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

Preview Lab → · Contrast checker → · Palette generator →