#2957B3#2957B3

#2957B3 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.8% C 0.155 H 262.3°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#2957B3
RGB	rgb(41, 87, 179)
HSL	hsl(220, 63%, 43%)
HSV	hsv(220, 77%, 70%)
CMYK	cmyk(77.1%, 51.4%, 0%, 29.8%)
CIE-LAB	lab(38.80, 17.78, -53.41)
CIE-LCH	lch(38.80, 56.29, 288.41°)
OKLab	oklab(47.85% -0.0209 -0.1537)
OKLCH	oklch(47.85% 0.155 262.3)
XYZ	xyz(12.4564, 10.5411, 44.0172)
Luminance	0.1054 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2957B3 #B38529

analogous

#299CB3 #2957B3 #4029B3

triadic

#2957B3 #B32957 #57B329

tetradic

#2957B3 #B3299C #B38529 #29B340

square

#2957B3 #B3299C #B38529 #29B340

split-complementary

#2957B3 #B34029 #9CB329

monochromatic

#12274F #1E3F81 #2957B3 #4575D4 #779AE0

Accessibility & contrast

On white

6.76

#2957B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#2957B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2957B3

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2957B3	#FFFFFF	#000000	##FFFFFF
##2957B3	1.00	6.76	3.11	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C62B6

Deuteranopia (green-blind)

#0055B1

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2957b3;
/* rgb */ color: rgb(41, 87, 179);
/* oklch */ color: oklch(47.8% 0.155 262.3);

Tailwind

colors: {
  custom: {
    50: '#7785ca',
    500: '#2957b3',
    950: '#000000',
  },
}

SCSS

$custom: #2957b3;
$custom-light: #7785ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2957b3",
  "rgb": {
    "r": 41,
    "g": 87,
    "b": 179
  },
  "hsl": {
    "h": 220,
    "s": 62.727,
    "l": 43.137
  },
  "oklch": {
    "l": 0.47845,
    "c": 0.15512,
    "h": 262.3
  },
  "luminance": 0.10542
}

Semantic roles & 50–950 ramp

primary

#2957B3

secondary

#C7AA70

accent

#AF42E6

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2957B3

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

Preview Lab → · Contrast checker → · Palette generator →