#2957BB#2957BB

#2957BB is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.5% C 0.166 H 263.1°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#2957BB
RGB	rgb(41, 87, 187)
HSL	hsl(221, 64%, 45%)
HSV	hsv(221, 78%, 73%)
CMYK	cmyk(78.1%, 53.5%, 0%, 26.7%)
CIE-LAB	lab(39.37, 20.86, -57.18)
CIE-LCH	lch(39.37, 60.86, 290.04°)
OKLab	oklab(48.46% -0.02 -0.1648)
OKLCH	oklch(48.46% 0.166 263.1)
XYZ	xyz(13.2891, 10.8741, 48.4026)
Luminance	0.1088 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2957BB #BB8D29

analogous

#29A0BB #2957BB #4429BB

triadic

#2957BB #BB2957 #57BB29

tetradic

#2957BB #BB29A0 #BB8D29 #29BB44

square

#2957BB #BB29A0 #BB8D29 #29BB44

split-complementary

#2957BB #BB4429 #A0BB29

monochromatic

#132857 #1E4089 #2957BB #4A76D7 #7C9CE2

Accessibility & contrast

On white

6.61

#2957BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#2957BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2957BB

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2957BB	#FFFFFF	#000000	##FFFFFF
##2957BB	1.00	6.61	3.18	6.61
#FFFFFF	6.61	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0664BF

Deuteranopia (green-blind)

#0056B9

Tritanopia (blue-blind)

#006F80

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #2957bb;
/* rgb */ color: rgb(41, 87, 187);
/* oklch */ color: oklch(48.5% 0.166 263.1);

Tailwind

colors: {
  custom: {
    50: '#7985d0',
    500: '#2957bb',
    950: '#000000',
  },
}

SCSS

$custom: #2957bb;
$custom-light: #7985d0;
$custom-dark: #000000;

JSON

{
  "hex": "#2957bb",
  "rgb": {
    "r": 41,
    "g": 87,
    "b": 187
  },
  "hsl": {
    "h": 221.096,
    "s": 64.035,
    "l": 44.706
  },
  "oklch": {
    "l": 0.4846,
    "c": 0.16601,
    "h": 263.1
  },
  "luminance": 0.10876
}

Semantic roles & 50–950 ramp

primary

#2957BB

secondary

#CBB075

accent

#B341E7

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #2957BB

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

Preview Lab → · Contrast checker → · Palette generator →