#40A6C4
Closest named color: Turquoise Blue (#06B1C4). oklch(67.8% 0.102 220.9), rgb(64, 166, 196).
Aa
Black text reads best on this color (7.46:1).
About this color
#40A6C4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 68%, its chroma 0.102 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.034 away. Black text reads best on it, at 7.46:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.46:1 |
| White text | 2.81:1 |
Values
| HEX | #40A6C4 |
| RGB | rgb(64, 166, 196) |
| HSL | hsl(194, 53%, 51%) |
| OKLCH | oklch(67.8% 0.102 220.9) |
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 #40A6C4 | 2.81:1 | Fails | Lc -59.0 | Large or bold text, headings |
| Black text on #40A6C4 | 7.46:1 | AAA | Lc 50.3 | Large or bold text, headings |
| #40A6C4 text on white | 2.81:1 | Fails | Lc 53.8 | Large or bold text, headings |
| #40A6C4 text on black | 7.46:1 | AAA | Lc -48.1 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DDEDF3
oklch(93.6% 0.019 222.2)
-
Step 200
200
#C1DFEA
oklch(88.5% 0.035 221.9)
-
Step 300
300
#92CBDE
oklch(80.9% 0.064 220.6)
-
Step 400
400 (this color)
#40A6C4
oklch(67.8% 0.102 220.9)
-
Step 500
500
#0099BA
oklch(63.2% 0.115 220.3)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#00495B
oklch(37.6% 0.069 221.4)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#40A6C4 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) | #94A2C6 | 0.084 |
| Deuteranopia (no green cones) | #8194C4 | 0.075 |
| Tritanopia (no blue cones) | #00B0B0 | 0.052 |
| Achromatopsia (no color) | #9A9A9A | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40A6C4
#40A6C4
oklch(67.8% 0.102 220.9)
- #CD8266
#CD8266
oklch(67.8% 0.102 41.2)
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 #40A6C4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.034
- Greyblue #77A1B5 ΔE 0.050
- Cadet Blue #5F9EA0 ΔE 0.053
- Light Sea Green #20B2AA ΔE 0.062
- Bluegrey #85A3B2 ΔE 0.066
- Bluey Grey #89A0B0 ΔE 0.071
- Faded Blue #658CBB ΔE 0.073
- Dull Teal #5F9E8F ΔE 0.076
Use #40A6C4 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.