#42A2AE
Closest named color: Cadet Blue (#5F9EA0). oklch(66% 0.09 206.6), rgb(66, 162, 174).
Aa
Black text reads best on this color (7.01:1).
About this color
#42A2AE is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.090 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.028 away. Black text reads best on it, at 7.01:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.01:1 |
| White text | 2.99:1 |
Values
| HEX | #42A2AE |
| RGB | rgb(66, 162, 174) |
| HSL | hsl(187, 45%, 47%) |
| OKLCH | oklch(66% 0.09 206.6) |
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 #42A2AE | 2.99:1 | Fails | Lc -61.7 | Content text, not long reading |
| Black text on #42A2AE | 7.01:1 | AAA | Lc 47.7 | Large or bold text, headings |
| #42A2AE text on white | 2.99:1 | Fails | Lc 56.4 | Large or bold text, headings |
| #42A2AE text on black | 7.01:1 | AAA | Lc -45.4 | 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 500.
-
Step 50
50
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECEE
oklch(93.5% 0.012 209.8)
-
Step 200
200
#C7DEE1
oklch(88.4% 0.025 206.2)
-
Step 300
300
#A0C9CF
oklch(80.8% 0.044 207.3)
-
Step 400
400
#69ADB7
oklch(70.6% 0.07 207.7)
-
Step 500
500 (this color)
#42A2AE
oklch(66% 0.09 206.6)
-
Step 600
600
#00838F
oklch(55.7% 0.095 206.1)
-
Step 700
700
#006E78
oklch(49.1% 0.084 205.8)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900
#0E4A51
oklch(37.6% 0.059 206.8)
-
Step 950
950
#0C2C30
oklch(27.2% 0.037 206.6)
#42A2AE 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) | #959CAF | 0.088 |
| Deuteranopia (no green cones) | #8590AE | 0.081 |
| Tritanopia (no blue cones) | #00A9A5 | 0.035 |
| Achromatopsia (no color) | #959595 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42A2AE
#42A2AE
oklch(66% 0.09 206.6)
- #C47C75
#C47C75
oklch(66% 0.091 25.8)
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 #42A2AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.028
- Sea #3C9992 ΔE 0.045
- Turquoise Blue #06B1C4 ΔE 0.046
- Dull Teal #5F9E8F ΔE 0.046
- Light Sea Green #20B2AA ΔE 0.050
- Persian Green #2A9D8F ΔE 0.051
- Greyblue #77A1B5 ΔE 0.052
- Grey Teal #5E9B8A ΔE 0.052
Use #42A2AE 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.