#40F5F6
Closest named color: Bright Light Blue (#26F7FD). oklch(88.4% 0.139 195.5), rgb(64, 245, 246).
Aa
Black text reads best on this color (15.60:1).
About this color
#40F5F6 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 88%, its chroma 0.139 and its hue 196°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Light Blue (#26F7FD), ΔE 0.011 away. Black text reads best on it, at 15.60:1.
| Hue family | Teals and cyans |
| Lightness | light (88%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Bright Light Blue (#26F7FD) |
| Black text | 15.60:1 |
| White text | 1.34:1 |
Values
| HEX | #40F5F6 |
| RGB | rgb(64, 245, 246) |
| HSL | hsl(180, 91%, 61%) |
| OKLCH | oklch(88.4% 0.139 195.5) |
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 #40F5F6 | 1.34:1 | Fails | Lc -18.9 | Dividers and decoration only |
| Black text on #40F5F6 | 15.60:1 | AAA | Lc 87.2 | Fine for body text |
| #40F5F6 text on white | 1.34:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #40F5F6 text on black | 15.60:1 | AAA | Lc -87.2 | Fine for body text |
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 200.
-
Step 50
50
#E4FBFA
oklch(97.1% 0.024 193.6)
-
Step 100
100
#C3F5F5
oklch(93.6% 0.051 196.3)
-
Step 200
200 (this color)
#40F5F6
oklch(88.4% 0.139 195.5)
-
Step 300
300
#00DCDD
oklch(81% 0.138 195.4)
-
Step 400
400
#00B7B8
oklch(70.6% 0.12 195.5)
-
Step 500
500
#009D9E
oklch(63.1% 0.108 195.6)
-
Step 600
600
#008485
oklch(55.6% 0.095 195.7)
-
Step 700
700
#006F70
oklch(49.1% 0.084 195.9)
-
Step 800
800
#005B5C
oklch(42.7% 0.073 196.1)
-
Step 900
900
#004C4C
oklch(37.7% 0.064 194.8)
-
Step 950
950
#002D2E
oklch(27% 0.046 197.1)
#40F5F6 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) | #E5E9F6 | 0.145 |
| Deuteranopia (no green cones) | #CBD6F7 | 0.135 |
| Tritanopia (no blue cones) | #00FDF5 | 0.024 |
| Achromatopsia (no color) | #DEDEDE | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40F5F6
#40F5F6
oklch(88.4% 0.139 195.5)
- #FFC9CC
#FFC9CC
oklch(88.4% 0.062 14.7)
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 #40F5F6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Light Blue #26F7FD ΔE 0.011
- Bright Cyan #41FDFE ΔE 0.022
- Bright Turquoise #0FFEF9 ΔE 0.024
- Bright Aqua #0BF9EA ΔE 0.026
- Cyan #00FFFF ΔE 0.026
- Robin's Egg #6DEDFD ΔE 0.034
- Robin Egg Blue #8AF1FE ΔE 0.049
- Robin's Egg Blue #98EFF9 ΔE 0.059
Use #40F5F6 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.