#307EB5#307EB5

#307EB5 is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 57.1% C 0.114 H 243.3°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#307EB5
RGB	rgb(48, 126, 181)
HSL	hsl(205, 58%, 45%)
HSV	hsv(205, 73%, 71%)
CMYK	cmyk(73.5%, 30.4%, 0%, 29%)
CIE-LAB	lab(50.55, -5.05, -35.82)
CIE-LCH	lch(50.55, 36.17, 261.97°)
OKLab	oklab(57.09% -0.051 -0.1014)
OKLCH	oklch(57.09% 0.114 243.3)
XYZ	xyz(17.0170, 18.8843, 46.4553)
Luminance	0.1889 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307EB5 #B56730

analogous

#30B5AA #307EB5 #303BB5

triadic

#307EB5 #B5307E #7EB530

tetradic

#307EB5 #AA30B5 #B56730 #3BB530

square

#307EB5 #AA30B5 #B56730 #3BB530

split-complementary

#307EB5 #B5303B #B5AA30

monochromatic

#163B54 #235C85 #307EB5 #519CD1 #82B8DE

Accessibility & contrast

On white

4.40

#307EB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#307EB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307EB5

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307EB5	#FFFFFF	#000000	##000000
##307EB5	1.00	4.40	4.78	4.78
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657FB7

Deuteranopia (green-blind)

#5273B4

Tritanopia (blue-blind)

#008B91

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #307eb5;
/* rgb */ color: rgb(48, 126, 181);
/* oklch */ color: oklch(57.1% 0.114 243.3);

Tailwind

colors: {
  custom: {
    50: '#7aa3cb',
    500: '#307eb5',
    950: '#000000',
  },
}

SCSS

$custom: #307eb5;
$custom-light: #7aa3cb;
$custom-dark: #000000;

JSON

{
  "hex": "#307eb5",
  "rgb": {
    "r": 48,
    "g": 126,
    "b": 181
  },
  "hsl": {
    "h": 204.812,
    "s": 58.079,
    "l": 44.902
  },
  "oklch": {
    "l": 0.57089,
    "c": 0.11351,
    "h": 243.3
  },
  "luminance": 0.18886
}

Semantic roles & 50–950 ramp

primary

#307EB5

secondary

#C79A7A

accent

#8746E1

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #307EB5

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

Preview Lab → · Contrast checker → · Palette generator →