#288989
Closest named color: Dark Cyan (#008B8B). oklch(57.6% 0.087 195), rgb(40, 137, 137).
Aa
Black text reads best on this color (5.02:1).
About this color
#288989 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.087 and its hue 195°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.012 away. Black text reads best on it, at 5.02:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.02:1 |
| White text | 4.17:1 |
Values
| HEX | #288989 |
| RGB | rgb(40, 137, 137) |
| HSL | hsl(180, 55%, 35%) |
| OKLCH | oklch(57.6% 0.087 195) |
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 #288989 | 4.17:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #288989 | 5.02:1 | AA | Lc 35.6 | Non-text elements, placeholder text |
| #288989 text on white | 4.17:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #288989 text on black | 5.02:1 | AA | Lc -33.2 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#CADEDD
oklch(88.5% 0.021 193.1)
-
Step 300
300
#A4C9C8
oklch(80.9% 0.039 194.4)
-
Step 400
400
#71ADAD
oklch(70.7% 0.062 195.8)
-
Step 500
500
#469998
oklch(63.2% 0.08 194.2)
-
Step 600
600 (this color)
#288989
oklch(57.6% 0.087 195)
-
Step 700
700
#0D6F6F
oklch(49.2% 0.081 194.8)
-
Step 800
800
#125A5A
oklch(42.6% 0.067 194.9)
-
Step 900
900
#194A4A
oklch(37.6% 0.052 195.2)
-
Step 950
950
#102B2B
oklch(26.8% 0.033 195.4)
#288989 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) | #808289 | 0.091 |
| Deuteranopia (no green cones) | #71778A | 0.085 |
| Tritanopia (no blue cones) | #008D89 | 0.015 |
| Achromatopsia (no color) | #7C7C7C | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #288989
#288989
oklch(57.6% 0.087 195)
- #A66369
#A66369
oklch(57.6% 0.087 14.4)
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 #288989, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.012
- Teal Green #0A9396 ΔE 0.030
- Teal #008080 ΔE 0.034
- Teal Blue #01889F ΔE 0.036
- Dusty Teal #4C9085 ΔE 0.037
- Sea #3C9992 ΔE 0.051
- Bluegreen #017A79 ΔE 0.052
- Blue Green #0F9B8E ΔE 0.052
Use #288989 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.