#42AEAA
Closest named color: Light Sea Green (#20B2AA). oklch(68.9% 0.097 191.7), rgb(66, 174, 170).
Aa
Black text reads best on this color (7.86:1).
About this color
#42AEAA is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 69%, its chroma 0.097 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.018 away. Black text reads best on it, at 7.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 7.86:1 |
| White text | 2.66:1 |
Values
| HEX | #42AEAA |
| RGB | rgb(66, 174, 170) |
| HSL | hsl(178, 45%, 47%) |
| OKLCH | oklch(68.9% 0.097 191.7) |
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 #42AEAA | 2.66:1 | Fails | Lc -56.8 | Large or bold text, headings |
| Black text on #42AEAA | 7.86:1 | AAA | Lc 52.4 | Large or bold text, headings |
| #42AEAA text on white | 2.66:1 | Fails | Lc 51.6 | Large or bold text, headings |
| #42AEAA text on black | 7.86:1 | AAA | Lc -50.3 | 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
#F0F7F7
oklch(97.1% 0.007 197)
-
Step 100
100
#DDEEED
oklch(93.6% 0.018 192.6)
-
Step 200
200
#C1E1DF
oklch(88.6% 0.034 191.9)
-
Step 300
300
#92CECA
oklch(80.9% 0.062 190.8)
-
Step 400
400 (this color)
#42AEAA
oklch(68.9% 0.097 191.7)
-
Step 500
500
#009E9A
oklch(63.2% 0.109 191.6)
-
Step 600
600
#008581
oklch(55.7% 0.096 191.1)
-
Step 700
700
#00706D
oklch(49.2% 0.085 191.5)
-
Step 800
800
#005B59
oklch(42.6% 0.073 192.2)
-
Step 900
900
#004C4A
oklch(37.6% 0.065 191.7)
-
Step 950
950
#002D2C
oklch(26.9% 0.046 192.5)
#42AEAA 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) | #A4A6AA | 0.102 |
| Deuteranopia (no green cones) | #9399AB | 0.096 |
| Tritanopia (no blue cones) | #00B3AC | 0.023 |
| Achromatopsia (no color) | #9E9E9E | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42AEAA
#42AEAA
oklch(68.9% 0.097 191.7)
- #D0818B
#D0818B
oklch(68.9% 0.098 11.8)
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 #42AEAA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.018
- Topaz #13BBAF ΔE 0.037
- Greeny Blue #42B395 ΔE 0.038
- Turquoise Blue #06B1C4 ΔE 0.039
- Cadet Blue #5F9EA0 ΔE 0.046
- Dull Teal #5F9E8F ΔE 0.051
- Grey Teal #5E9B8A ΔE 0.059
- Persian Green #2A9D8F ΔE 0.060
Use #42AEAA 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.