#40BADF
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(73.7% 0.117 222.3), rgb(64, 186, 223).
Aa
Black text reads best on this color (9.30:1).
About this color
#40BADF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.117 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.045 away. Black text reads best on it, at 9.30:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 9.30:1 |
| White text | 2.25:1 |
Values
| HEX | #40BADF |
| RGB | rgb(64, 186, 223) |
| HSL | hsl(194, 71%, 56%) |
| OKLCH | oklch(73.7% 0.117 222.3) |
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 #40BADF | 2.25:1 | Fails | Lc -48.9 | Large or bold text, headings |
| Black text on #40BADF | 9.30:1 | AAA | Lc 59.8 | Large or bold text, headings |
| #40BADF text on white | 2.25:1 | Fails | Lc 44.1 | Non-text elements, placeholder text |
| #40BADF text on black | 9.30:1 | AAA | Lc -58.0 | 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
#EFF7FA
oklch(97.1% 0.009 222.1)
-
Step 100
100
#DBEDF4
oklch(93.5% 0.021 223)
-
Step 200
200
#BDE0ED
oklch(88.6% 0.041 222.3)
-
Step 300
300
#8BCCE3
oklch(81% 0.073 222.2)
-
Step 400
400 (this color)
#40BADF
oklch(73.7% 0.117 222.3)
-
Step 500
500
#0098BC
oklch(63% 0.117 222.5)
-
Step 600
600
#00809E
oklch(55.6% 0.103 221.9)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900
#00495C
oklch(37.6% 0.07 222.6)
-
Step 950
950
#002C38
oklch(27.2% 0.05 221.4)
#40BADF 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) | #A4B6E1 | 0.094 |
| Deuteranopia (no green cones) | #8FA6DF | 0.084 |
| Tritanopia (no blue cones) | #00C6C6 | 0.060 |
| Achromatopsia (no color) | #ADADAD | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40BADF
#40BADF
oklch(73.7% 0.117 222.3)
- #E8906D
#E8906D
oklch(73.7% 0.118 42.3)
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 #40BADF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.045
- Deep Sky Blue #00BFFF ΔE 0.046
- Turquoise Blue #06B1C4 ΔE 0.050
- Bright Sky Blue #02CCFE ΔE 0.056
- Dark Turquoise #00CED1 ΔE 0.067
- Lightblue #7BC8F6 ΔE 0.070
- Topaz #13BBAF ΔE 0.077
- Medium Turquoise #48D1CC ΔE 0.079
Use #40BADF 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.