#5FC9EF
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(78.8% 0.111 224.5), rgb(95, 201, 239).
Aa
Black text reads best on this color (11.08:1).
About this color
#5FC9EF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 79%, its chroma 0.111 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.012 away. Black text reads best on it, at 11.08:1.
| Hue family | Teals and cyans |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 11.08:1 |
| White text | 1.89:1 |
Values
| HEX | #5FC9EF |
| RGB | rgb(95, 201, 239) |
| HSL | hsl(196, 82%, 65%) |
| OKLCH | oklch(78.8% 0.111 224.5) |
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 #5FC9EF | 1.89:1 | Fails | Lc -40.0 | Non-text elements, placeholder text |
| Black text on #5FC9EF | 11.08:1 | AAA | Lc 68.1 | Content text, not long reading |
| #5FC9EF text on white | 1.89:1 | Fails | Lc 35.8 | Non-text elements, placeholder text |
| #5FC9EF text on black | 11.08:1 | AAA | Lc -66.7 | Content text, not long reading |
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 300.
-
Step 50
50
#EBF8FD
oklch(97.1% 0.015 222.7)
-
Step 100
100
#D4EFFA
oklch(93.6% 0.032 224.2)
-
Step 200
200
#AEE3F8
oklch(88.6% 0.061 224.2)
-
Step 300
300 (this color)
#5FC9EF
oklch(78.8% 0.111 224.5)
-
Step 400
400
#00B1DE
oklch(70.7% 0.133 224.4)
-
Step 500
500
#0098BF
oklch(63.2% 0.119 224.4)
-
Step 600
600
#007FA1
oklch(55.5% 0.105 225)
-
Step 700
700
#006B88
oklch(49.1% 0.093 224.9)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#00495E
oklch(37.7% 0.071 225)
-
Step 950
950
#002B39
oklch(26.9% 0.051 225.5)
#5FC9EF 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) | #B4C5F1 | 0.087 |
| Deuteranopia (no green cones) | #9FB6EF | 0.076 |
| Tritanopia (no blue cones) | #00D5D5 | 0.067 |
| Achromatopsia (no color) | #BCBCBC | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5FC9EF
#5FC9EF
oklch(78.8% 0.111 224.5)
- #F6A37E
#F6A37E
oklch(78.9% 0.111 44.7)
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 #5FC9EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.012
- Lightblue #7BC8F6 ΔE 0.027
- Bright Sky Blue #02CCFE ΔE 0.036
- Sky #82CAFC ΔE 0.038
- Sky Blue #87CEEB ΔE 0.040
- Light Sky Blue #87CEFA ΔE 0.043
- Aqua Blue #02D8E9 ΔE 0.052
- Deep Sky Blue #00BFFF ΔE 0.056
Use #5FC9EF 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.