#3FABE9
Closest named color: Deep Sky Blue (#00BFFF). oklch(70.7% 0.132 238.3), rgb(63, 171, 233).
Aa
Black text reads best on this color (8.21:1).
About this color
#3FABE9 is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.132 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.055 away. Black text reads best on it, at 8.21:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.21:1 |
| White text | 2.55:1 |
Values
| HEX | #3FABE9 |
| RGB | rgb(63, 171, 233) |
| HSL | hsl(202, 79%, 58%) |
| OKLCH | oklch(70.7% 0.132 238.3) |
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 #3FABE9 | 2.55:1 | Fails | Lc -54.8 | Large or bold text, headings |
| Black text on #3FABE9 | 8.21:1 | AAA | Lc 54.3 | Large or bold text, headings |
| #3FABE9 text on white | 2.55:1 | Fails | Lc 49.7 | Large or bold text, headings |
| #3FABE9 text on black | 8.21:1 | AAA | Lc -52.2 | 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 400.
-
Step 50
50
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DCEDF8
oklch(93.7% 0.023 236)
-
Step 200
200
#BEDEF5
oklch(88.5% 0.046 239.3)
-
Step 300
300
#8EC9F0
oklch(81% 0.082 238.1)
-
Step 400
400 (this color)
#3FABE9
oklch(70.7% 0.132 238.3)
-
Step 500
500
#0093D4
oklch(63% 0.141 238.5)
-
Step 600
600
#007CB3
oklch(55.7% 0.124 238.2)
-
Step 700
700
#006897
oklch(49.1% 0.109 238.1)
-
Step 800
800
#00557D
oklch(42.7% 0.096 238.5)
-
Step 900
900
#004769
oklch(37.8% 0.084 238.3)
-
Step 950
950
#002A40
oklch(27% 0.06 237.8)
#3FABE9 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) | #8EABEC | 0.074 |
| Deuteranopia (no green cones) | #779BE8 | 0.060 |
| Tritanopia (no blue cones) | #00BBC0 | 0.089 |
| Achromatopsia (no color) | #A2A2A2 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FABE9
#3FABE9
oklch(70.7% 0.132 238.3)
- #DD8A44
#DD8A44
oklch(70.7% 0.132 58.2)
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 #3FABE9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.055
- Chefchaouen Blue #4895EF ΔE 0.062
- Cornflower Blue #6495ED ΔE 0.064
- Turquoise Blue #06B1C4 ΔE 0.067
- Dark Sky Blue #448EE4 ΔE 0.078
- Greyblue #77A1B5 ΔE 0.082
- Vivid Sky Blue #4CC9F0 ΔE 0.084
- Carolina Blue #8AB8FE ΔE 0.085
Use #3FABE9 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.