#3CB9EF
Closest named color: Deep Sky Blue (#00BFFF). oklch(74.1% 0.132 231.4), rgb(60, 185, 239).
Aa
Black text reads best on this color (9.37:1).
About this color
#3CB9EF is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.132 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.026 away. Black text reads best on it, at 9.37:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.37:1 |
| White text | 2.23:1 |
Values
| HEX | #3CB9EF |
| RGB | rgb(60, 185, 239) |
| HSL | hsl(198, 85%, 59%) |
| OKLCH | oklch(74.1% 0.132 231.4) |
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 #3CB9EF | 2.23:1 | Fails | Lc -48.5 | Large or bold text, headings |
| Black text on #3CB9EF | 9.37:1 | AAA | Lc 60.2 | Content text, not long reading |
| #3CB9EF text on white | 2.23:1 | Fails | Lc 43.7 | Non-text elements, placeholder text |
| #3CB9EF text on black | 9.37:1 | AAA | Lc -58.4 | 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 400.
-
Step 50
50
#EEF7FC
oklch(97.1% 0.012 231.7)
-
Step 100
100
#DBEDF7
oklch(93.6% 0.023 231.8)
-
Step 200
200
#BCDFF2
oklch(88.4% 0.045 231.7)
-
Step 300
300
#89CBED
oklch(81% 0.082 231.5)
-
Step 400
400 (this color)
#3CB9EF
oklch(74.1% 0.132 231.4)
-
Step 500
500
#0096C9
oklch(63.2% 0.128 231.5)
-
Step 600
600
#007EA9
oklch(55.6% 0.112 231.2)
-
Step 700
700
#006A8F
oklch(49.2% 0.1 231.3)
-
Step 800
800
#005776
oklch(42.8% 0.087 231.2)
-
Step 900
900
#004863
oklch(37.7% 0.077 231.8)
-
Step 950
950
#002B3C
oklch(27.1% 0.054 230.4)
#3CB9EF 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) | #9EB7F2 | 0.088 |
| Deuteranopia (no green cones) | #86A6EE | 0.074 |
| Tritanopia (no blue cones) | #00C8CB | 0.079 |
| Achromatopsia (no color) | #ADADAD | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3CB9EF
#3CB9EF
oklch(74.1% 0.132 231.4)
- #EC9159
#EC9159
oklch(74% 0.132 51.1)
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 #3CB9EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.026
- Vivid Sky Blue #4CC9F0 ΔE 0.047
- Bright Sky Blue #02CCFE ΔE 0.050
- Lightblue #7BC8F6 ΔE 0.067
- Turquoise Blue #06B1C4 ΔE 0.068
- Carolina Blue #8AB8FE ΔE 0.070
- Sky #82CAFC ΔE 0.078
- Dark Turquoise #00CED1 ΔE 0.084
Use #3CB9EF 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.