#3C9DD8
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.5% 0.125 239.5), rgb(60, 157, 216).
Aa
Black text reads best on this color (7.00:1).
About this color
#3C9DD8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.125 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.046 away. Black text reads best on it, at 7.00:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.00:1 |
| White text | 2.99:1 |
Values
| HEX | #3C9DD8 |
| RGB | rgb(60, 157, 216) |
| HSL | hsl(203, 67%, 54%) |
| OKLCH | oklch(66.5% 0.125 239.5) |
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 #3C9DD8 | 2.99:1 | Fails | Lc -61.7 | Content text, not long reading |
| Black text on #3C9DD8 | 7.00:1 | AAA | Lc 47.7 | Large or bold text, headings |
| #3C9DD8 text on white | 2.99:1 | Fails | Lc 56.3 | Large or bold text, headings |
| #3C9DD8 text on black | 7.00:1 | AAA | Lc -45.5 | 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
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C6DDEE
oklch(88.6% 0.034 239.9)
-
Step 300
300
#9DC7E4
oklch(80.9% 0.061 238.6)
-
Step 400
400
#64A9D7
oklch(70.7% 0.097 239.3)
-
Step 500
500 (this color)
#3C9DD8
oklch(66.5% 0.125 239.5)
-
Step 600
600
#007BB5
oklch(55.6% 0.127 239.8)
-
Step 700
700
#006799
oklch(49% 0.112 240)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#074668
oklch(37.6% 0.082 239.9)
-
Step 950
950
#09293D
oklch(26.9% 0.052 240.5)
#3C9DD8 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) | #819DDB | 0.066 |
| Deuteranopia (no green cones) | #6C8ED7 | 0.054 |
| Tritanopia (no blue cones) | #00ACB1 | 0.085 |
| Achromatopsia (no color) | #959595 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C9DD8
#3C9DD8
oklch(66.5% 0.125 239.5)
- #CB7F3C
#CB7F3C
oklch(66.5% 0.125 59.3)
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 #3C9DD8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.046
- Dark Sky Blue #448EE4 ΔE 0.049
- Cornflower Blue #6495ED ΔE 0.054
- Faded Blue #658CBB ΔE 0.060
- Water Blue #0E87CC ΔE 0.069
- Turquoise Blue #06B1C4 ΔE 0.073
- Soft Blue #6488EA ΔE 0.073
- Cool Blue #4984B8 ΔE 0.075
Use #3C9DD8 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.