#509CCD
Closest named color: Faded Blue (#658CBB). oklch(66.5% 0.105 239.3), rgb(80, 156, 205).
Aa
Black text reads best on this color (6.97:1).
About this color
#509CCD is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.105 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.047 away. Black text reads best on it, at 6.97:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.97:1 |
| White text | 3.00:1 |
Values
| HEX | #509CCD |
| RGB | rgb(80, 156, 205) |
| HSL | hsl(204, 56%, 56%) |
| OKLCH | oklch(66.5% 0.105 239.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #509CCD | 3.00:1 | AA large text | Lc -61.9 | Content text, not long reading |
| Black text on #509CCD | 6.97:1 | AA | Lc 47.5 | Large or bold text, headings |
| #509CCD text on white | 3.00:1 | AA large text | Lc 56.6 | Large or bold text, headings |
| #509CCD text on black | 6.97:1 | AA | Lc -45.2 | Large or bold text, headings |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF3
oklch(93.5% 0.015 241.8)
-
Step 200
200
#C9DCEA
oklch(88.5% 0.028 239.7)
-
Step 300
300
#A3C6DF
oklch(80.9% 0.052 239.4)
-
Step 400
400
#6FA8CF
oklch(70.7% 0.083 239.4)
-
Step 500
500 (this color)
#509CCD
oklch(66.5% 0.105 239.3)
-
Step 600
600
#207BAF
oklch(55.6% 0.114 239.6)
-
Step 700
700
#0F6796
oklch(49% 0.106 239.7)
-
Step 800
800
#12557A
oklch(42.8% 0.088 239)
-
Step 900
900
#194662
oklch(37.7% 0.068 239.6)
-
Step 950
950
#102939
oklch(26.9% 0.043 239.2)
#509CCD with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #869CCF | 0.058 |
| Deuteranopia (no green cones) | #758FCC | 0.048 |
| Tritanopia (no blue cones) | #00A8AD | 0.076 |
| Achromatopsia (no color) | #959595 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #509CCD
#509CCD
oklch(66.5% 0.105 239.3)
- #C3834E
#C3834E
oklch(66.4% 0.105 59.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #509CCD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.047
- Greyblue #77A1B5 ΔE 0.057
- Chefchaouen Blue #4895EF ΔE 0.059
- Dark Sky Blue #448EE4 ΔE 0.060
- Cornflower Blue #6495ED ΔE 0.060
- Silver Lake Blue #778DA9 ΔE 0.065
- Dusty Blue #5A86AD ΔE 0.068
- Turquoise Blue #06B1C4 ΔE 0.069
Use #509CCD in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.