#288987
Closest named color: Dark Cyan (#008B8B). oklch(57.5% 0.087 193), rgb(40, 137, 135).
Aa
Black text reads best on this color (5.01:1).
About this color
#288987 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.087 and its hue 193°. 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 5.01:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.01:1 |
| White text | 4.18:1 |
Values
| HEX | #288987 |
| RGB | rgb(40, 137, 135) |
| HSL | hsl(179, 55%, 35%) |
| OKLCH | oklch(57.5% 0.087 193) |
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 #288987 | 4.18:1 | AA large text | Lc -74.0 | Content text, not long reading |
| Black text on #288987 | 5.01:1 | AA | Lc 35.6 | Non-text elements, placeholder text |
| #288987 text on white | 4.18:1 | AA large text | Lc 68.5 | Content text, not long reading |
| #288987 text on black | 5.01:1 | AA | Lc -33.1 | 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
#A4C9C7
oklch(80.9% 0.039 192.3)
-
Step 400
400
#71ADAB
oklch(70.6% 0.062 193.2)
-
Step 500
500
#479997
oklch(63.2% 0.08 193.2)
-
Step 600
600 (this color)
#288987
oklch(57.5% 0.087 193)
-
Step 700
700
#0E6F6D
oklch(49.1% 0.081 192.6)
-
Step 800
800
#125A59
oklch(42.6% 0.067 193.5)
-
Step 900
900
#194A49
oklch(37.6% 0.052 193.3)
-
Step 950
950
#102C2B
oklch(27.1% 0.034 192.2)
#288987 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) | #808287 | 0.091 |
| Deuteranopia (no green cones) | #727788 | 0.086 |
| Tritanopia (no blue cones) | #008D88 | 0.015 |
| Achromatopsia (no color) | #7C7C7C | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #288987
#288987
oklch(57.5% 0.087 193)
- #A6636A
#A6636A
oklch(57.6% 0.087 13.4)
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 #288987, 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 0.031
- Teal #008080 ΔE 0.033
- Dusty Teal #4C9085 ΔE 0.037
- Teal Blue #01889F ΔE 0.039
- Bluegreen #017A79 ΔE 0.051
- Sea #3C9992 ΔE 0.051
- Blue Green #0F9B8E ΔE 0.052
Use #288987 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.