#557EB9#557EB9

#557EB9 is a mid, moderate blue. Relative luminance 0.204; OKLCH L 58.9% C 0.102 H 257.5°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#557EB9
RGB	rgb(85, 126, 185)
HSL	hsl(215, 42%, 53%)
HSV	hsv(215, 54%, 73%)
CMYK	cmyk(54.1%, 31.9%, 0%, 27.5%)
CIE-LAB	lab(52.24, 3.08, -35.37)
CIE-LCH	lch(52.24, 35.51, 274.98°)
OKLab	oklab(58.89% -0.0221 -0.0996)
OKLCH	oklch(58.89% 0.102 257.5)
XYZ	xyz(19.9611, 20.3542, 48.7664)
Luminance	0.2036 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557EB9 #B99055

analogous

#55B0B9 #557EB9 #5E55B9

triadic

#557EB9 #B9557E #7EB955

tetradic

#557EB9 #B955B0 #B99055 #55B95E

square

#557EB9 #B955B0 #B99055 #55B95E

split-complementary

#557EB9 #B95E55 #B0B955

monochromatic

#2B4469 #3D6194 #557EB9 #809FCB #ACC0DD

Accessibility & contrast

On white

4.14

#557EB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#557EB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557EB9

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557EB9	#FFFFFF	#000000	##000000
##557EB9	1.00	4.14	5.07	5.07
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.07	21.00	1.00	1.00
##000000	5.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6682BC

Deuteranopia (green-blind)

#5A78B8

Tritanopia (blue-blind)

#1C8B93

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #557eb9;
/* rgb */ color: rgb(85, 126, 185);
/* oklch */ color: oklch(58.9% 0.102 257.5);

Tailwind

colors: {
  custom: {
    50: '#8ba3ce',
    500: '#557eb9',
    950: '#000000',
  },
}

SCSS

$custom: #557eb9;
$custom-light: #8ba3ce;
$custom-dark: #000000;

JSON

{
  "hex": "#557eb9",
  "rgb": {
    "r": 85,
    "g": 126,
    "b": 185
  },
  "hsl": {
    "h": 215.4,
    "s": 41.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.58886,
    "c": 0.10203,
    "h": 257.5
  },
  "luminance": 0.20356
}

Semantic roles & 50–950 ramp

primary

#557EB9

secondary

#CBB99F

accent

#9F56D1

background

#F8FAFC

surface

#F0F3F9

border

#CBCDD2

text

#0C0F13

muted

#7D7F82

Preview Lab

Preview with #557EB9

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

Preview Lab → · Contrast checker → · Palette generator →