#2A8789
Closest named color: Dark Cyan (#008B8B). oklch(57.1% 0.084 197.1), rgb(42, 135, 137).
Aa
Black text reads best on this color (4.92:1).
About this color
#2A8789 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.084 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.015 away. Black text reads best on it, at 4.92:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.92:1 |
| White text | 4.26:1 |
Values
| HEX | #2A8789 |
| RGB | rgb(42, 135, 137) |
| HSL | hsl(181, 53%, 35%) |
| OKLCH | oklch(57.1% 0.084 197.1) |
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 #2A8789 | 4.26:1 | AA large text | Lc -74.7 | Content text, not long reading |
| Black text on #2A8789 | 4.92:1 | AA | Lc 34.9 | Non-text elements, placeholder text |
| #2A8789 text on white | 4.26:1 | AA large text | Lc 69.2 | Content text, not long reading |
| #2A8789 text on black | 4.92:1 | AA | Lc -32.5 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#CADEDE
oklch(88.6% 0.021 196.8)
-
Step 300
300
#A5C9C9
oklch(81% 0.038 196.4)
-
Step 400
400
#72ADAE
oklch(70.8% 0.061 197.2)
-
Step 500
500
#49989A
oklch(63.1% 0.077 197.6)
-
Step 600
600 (this color)
#2A8789
oklch(57.1% 0.084 197.1)
-
Step 700
700
#136E70
oklch(49% 0.079 197.2)
-
Step 800
800
#155A5B
oklch(42.7% 0.065 196.4)
-
Step 900
900
#1B4A4B
oklch(37.8% 0.05 197.2)
-
Step 950
950
#112B2C
oklch(26.9% 0.032 198.8)
#2A8789 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) | #7E8189 | 0.088 |
| Deuteranopia (no green cones) | #6F768A | 0.081 |
| Tritanopia (no blue cones) | #008C87 | 0.020 |
| Achromatopsia (no color) | #7A7A7A | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A8789
#2A8789
oklch(57.1% 0.084 197.1)
- #A46366
#A46366
oklch(57.2% 0.084 17.1)
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 #2A8789, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.015
- Teal #008080 ΔE 0.030
- Teal Blue #01889F ΔE 0.034
- Teal Green #0A9396 ΔE 0.035
- Dusty Teal #4C9085 ΔE 0.041
- Ocean #017B92 ΔE 0.047
- Bluegreen #017A79 ΔE 0.048
- Deep Aqua #08787F ΔE 0.050
Use #2A8789 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.