#42AEBD
Closest named color: Turquoise Blue (#06B1C4). oklch(69.5% 0.099 208), rgb(66, 174, 189).
Aa
Black text reads best on this color (8.02:1).
About this color
#42AEBD is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 70%, its chroma 0.099 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.020 away. Black text reads best on it, at 8.02:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.02:1 |
| White text | 2.61:1 |
Values
| HEX | #42AEBD |
| RGB | rgb(66, 174, 189) |
| HSL | hsl(187, 48%, 50%) |
| OKLCH | oklch(69.5% 0.099 208) |
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 #42AEBD | 2.61:1 | Fails | Lc -55.9 | Large or bold text, headings |
| Black text on #42AEBD | 8.02:1 | AAA | Lc 53.2 | Large or bold text, headings |
| #42AEBD text on white | 2.61:1 | Fails | Lc 50.8 | Large or bold text, headings |
| #42AEBD text on black | 8.02:1 | AAA | Lc -51.1 | 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
#EFF7F8
oklch(97% 0.009 205.9)
-
Step 100
100
#DDEDF0
oklch(93.5% 0.017 210.2)
-
Step 200
200
#C0E0E5
oklch(88.5% 0.034 208)
-
Step 300
300
#91CCD5
oklch(80.8% 0.062 207.9)
-
Step 400
400 (this color)
#42AEBD
oklch(69.5% 0.099 208)
-
Step 500
500
#009BAC
oklch(63.1% 0.109 208.4)
-
Step 600
600
#008290
oklch(55.5% 0.095 208)
-
Step 700
700
#006E7A
oklch(49.2% 0.085 207.9)
-
Step 800
800
#005A64
oklch(42.8% 0.073 207.9)
-
Step 900
900
#004B53
oklch(37.7% 0.065 207)
-
Step 950
950
#002D32
oklch(27.1% 0.046 206.3)
#42AEBD 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) | #A0A8BE | 0.096 |
| Deuteranopia (no green cones) | #8D9ABD | 0.087 |
| Tritanopia (no blue cones) | #00B5B2 | 0.036 |
| Achromatopsia (no color) | #A0A0A0 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42AEBD
#42AEBD
oklch(69.5% 0.099 208)
- #D3857A
#D3857A
oklch(69.5% 0.098 28.5)
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 #42AEBD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.020
- Light Sea Green #20B2AA ΔE 0.039
- Topaz #13BBAF ΔE 0.051
- Cadet Blue #5F9EA0 ΔE 0.053
- Greyblue #77A1B5 ΔE 0.053
- Bluegrey #85A3B2 ΔE 0.064
- Greeny Blue #42B395 ΔE 0.066
- Dull Teal #5F9E8F ΔE 0.069
Use #42AEBD 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.