#289B9A
Closest named color: Sea (#3C9992). oklch(62.9% 0.098 194.1), rgb(40, 155, 154).
Aa
Black text reads best on this color (6.24:1).
About this color
#289B9A is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.098 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Sea (#3C9992), ΔE 0.014 away. Black text reads best on it, at 6.24:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.24:1 |
| White text | 3.36:1 |
Values
| HEX | #289B9A |
| RGB | rgb(40, 155, 154) |
| HSL | hsl(179, 59%, 38%) |
| OKLCH | oklch(62.9% 0.098 194.1) |
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 #289B9A | 3.36:1 | AA large text | Lc -66.1 | Content text, not long reading |
| Black text on #289B9A | 6.24:1 | AA | Lc 43.4 | Non-text elements, placeholder text |
| #289B9A text on white | 3.36:1 | AA large text | Lc 60.7 | Content text, not long reading |
| #289B9A text on black | 6.24:1 | AA | Lc -41.0 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E0EDEC
oklch(93.6% 0.014 191.4)
-
Step 200
200
#C6DFDE
oklch(88.5% 0.027 193.7)
-
Step 300
300
#9DCBCA
oklch(80.9% 0.048 194.6)
-
Step 400
400
#63B0AE
oklch(70.7% 0.077 193.4)
-
Step 500
500 (this color)
#289B9A
oklch(62.9% 0.098 194.1)
-
Step 600
600
#008484
oklch(55.5% 0.095 194.8)
-
Step 700
700
#006F6F
oklch(49% 0.084 194.8)
-
Step 800
800
#005B5B
oklch(42.7% 0.073 194.8)
-
Step 900
900
#024C4B
oklch(37.7% 0.064 193.3)
-
Step 950
950
#082D2C
oklch(27.2% 0.041 192.4)
#289B9A 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) | #91939A | 0.103 |
| Deuteranopia (no green cones) | #80879B | 0.095 |
| Tritanopia (no blue cones) | #00A09A | 0.016 |
| Achromatopsia (no color) | #8C8C8C | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #289B9A
#289B9A
oklch(62.9% 0.098 194.1)
- #BC6F77
#BC6F77
oklch(62.8% 0.098 13.6)
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 #289B9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea #3C9992 ΔE 0.014
- Persian Green #2A9D8F ΔE 0.020
- Blue Green #0F9B8E ΔE 0.021
- Teal Green #0A9396 ΔE 0.027
- Dusty Teal #4C9085 ΔE 0.039
- Grey Teal #5E9B8A ΔE 0.043
- Cadet Blue #5F9EA0 ΔE 0.044
- Dull Teal #5F9E8F ΔE 0.044
Use #289B9A 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.