#40ABC8
Closest named color: Turquoise Blue (#06B1C4). oklch(69.2% 0.104 219.3), rgb(64, 171, 200).
Aa
Black text reads best on this color (7.87:1).
About this color
#40ABC8 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 69%, its chroma 0.104 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.026 away. Black text reads best on it, at 7.87:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.87:1 |
| White text | 2.66:1 |
Values
| HEX | #40ABC8 |
| RGB | rgb(64, 171, 200) |
| HSL | hsl(193, 55%, 52%) |
| OKLCH | oklch(69.2% 0.104 219.3) |
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 #40ABC8 | 2.66:1 | Fails | Lc -56.7 | Large or bold text, headings |
| Black text on #40ABC8 | 7.87:1 | AAA | Lc 52.5 | Large or bold text, headings |
| #40ABC8 text on white | 2.66:1 | Fails | Lc 51.5 | Large or bold text, headings |
| #40ABC8 text on black | 7.87:1 | AAA | Lc -50.4 | 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
#EFF7F9
oklch(97.1% 0.009 214.3)
-
Step 100
100
#DDEDF3
oklch(93.6% 0.019 222.2)
-
Step 200
200
#C0DFEA
oklch(88.5% 0.036 221.2)
-
Step 300
300
#91CBDE
oklch(80.9% 0.065 220.2)
-
Step 400
400 (this color)
#40ABC8
oklch(69.2% 0.104 219.3)
-
Step 500
500
#0099B8
oklch(63.1% 0.114 219)
-
Step 600
600
#00809B
oklch(55.5% 0.101 219.5)
-
Step 700
700
#006C83
oklch(49.1% 0.089 219.3)
-
Step 800
800
#00586C
oklch(42.6% 0.078 220.2)
-
Step 900
900
#004A5A
oklch(37.8% 0.068 218.5)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#40ABC8 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) | #99A6CA | 0.089 |
| Deuteranopia (no green cones) | #8698C8 | 0.080 |
| Tritanopia (no blue cones) | #00B5B4 | 0.052 |
| Achromatopsia (no color) | #9E9E9E | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40ABC8
#40ABC8
oklch(69.2% 0.104 219.3)
- #D3856B
#D3856B
oklch(69.2% 0.104 39.2)
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 #40ABC8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.026
- Greyblue #77A1B5 ΔE 0.052
- Light Sea Green #20B2AA ΔE 0.058
- Cadet Blue #5F9EA0 ΔE 0.060
- Bluegrey #85A3B2 ΔE 0.066
- Topaz #13BBAF ΔE 0.070
- Bluey Grey #89A0B0 ΔE 0.072
- Dull Teal #5F9E8F ΔE 0.081
Use #40ABC8 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.