#289C8A
Closest named color: Persian Green (#2A9D8F). oklch(62.6% 0.103 179.8), rgb(40, 156, 138).
Aa
Black text reads best on this color (6.21:1).
About this color
#289C8A is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.103 and its hue 180°. Its hue sits on the cool side of the wheel. The nearest named color is Persian Green (#2A9D8F), ΔE 0.008 away. Black text reads best on it, at 6.21:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Persian Green (#2A9D8F) |
| Black text | 6.21:1 |
| White text | 3.38:1 |
Values
| HEX | #289C8A |
| RGB | rgb(40, 156, 138) |
| HSL | hsl(171, 59%, 38%) |
| OKLCH | oklch(62.6% 0.103 179.8) |
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 #289C8A | 3.38:1 | AA large text | Lc -66.3 | Content text, not long reading |
| Black text on #289C8A | 6.21:1 | AA | Lc 43.2 | Non-text elements, placeholder text |
| #289C8A text on white | 3.38:1 | AA large text | Lc 60.9 | Content text, not long reading |
| #289C8A text on black | 6.21:1 | AA | Lc -40.8 | 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 500.
-
Step 50
50
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E0EDEA
oklch(93.6% 0.014 180.7)
-
Step 200
200
#C6E0DA
oklch(88.6% 0.029 180.2)
-
Step 300
300
#9ECCC2
oklch(81% 0.05 180.2)
-
Step 400
400
#64B1A2
oklch(70.6% 0.08 179.9)
-
Step 500
500 (this color)
#289C8A
oklch(62.6% 0.103 179.8)
-
Step 600
600
#008675
oklch(55.5% 0.101 179.7)
-
Step 700
700
#007162
oklch(49.1% 0.09 179.3)
-
Step 800
800
#005D50
oklch(42.8% 0.078 178.9)
-
Step 900
900
#034D43
oklch(37.7% 0.067 180.1)
-
Step 950
950
#082D27
oklch(26.9% 0.043 179.9)
#289C8A 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) | #959289 | 0.109 |
| Deuteranopia (no green cones) | #85878C | 0.103 |
| Tritanopia (no blue cones) | #009F96 | 0.018 |
| Achromatopsia (no color) | #8C8C8C | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #289C8A
#289C8A
oklch(62.6% 0.103 179.8)
- #BA6C85
#BA6C85
oklch(62.5% 0.103 359.9)
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 #289C8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Persian Green #2A9D8F ΔE 0.008
- Blue Green #0F9B8E ΔE 0.011
- Sea #3C9992 ΔE 0.021
- Ocean Green #3D9973 ΔE 0.032
- Dusty Teal #4C9085 ΔE 0.038
- Teal Green #0A9396 ΔE 0.039
- Grey Teal #5E9B8A ΔE 0.039
- Dull Teal #5F9E8F ΔE 0.043
Use #289C8A 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.