#287765
Closest named color: Dark Aquamarine (#017371). oklch(51.6% 0.082 174.9), rgb(40, 119, 101).
Aa
White text reads best on this color (5.36:1).
About this color
#287765 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.082 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.030 away. White text reads best on it, at 5.36:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.91:1 |
| White text | 5.36:1 |
Values
| HEX | #287765 |
| RGB | rgb(40, 119, 101) |
| HSL | hsl(166, 50%, 31%) |
| OKLCH | oklch(51.6% 0.082 174.9) |
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 #287765 | 5.36:1 | AA | Lc -81.8 | Fine for body text |
| Black text on #287765 | 3.91:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #287765 text on white | 5.36:1 | AA | Lc 76.4 | Fine for body text |
| #287765 text on black | 3.91:1 | AA large text | Lc -25.3 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2ECE9
oklch(93.5% 0.011 176.3)
-
Step 200
200
#CBDED8
oklch(88.5% 0.022 174.9)
-
Step 300
300
#A7C9BF
oklch(80.8% 0.039 175.5)
-
Step 400
400
#76AE9E
oklch(70.7% 0.063 174.6)
-
Step 500
500
#4F9A87
oklch(63.2% 0.081 175)
-
Step 600
600
#2E8470
oklch(55.6% 0.088 174.6)
-
Step 700
700 (this color)
#287765
oklch(51.6% 0.082 174.9)
-
Step 800
800
#1D5B4D
oklch(42.7% 0.067 175.1)
-
Step 900
900
#1F4B40
oklch(37.8% 0.053 174.6)
-
Step 950
950
#132C25
oklch(27% 0.034 173.4)
#287765 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) | #736F64 | 0.086 |
| Deuteranopia (no green cones) | #676766 | 0.081 |
| Tritanopia (no blue cones) | #007872 | 0.022 |
| Achromatopsia (no color) | #6B6B6B | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #287765
#287765
oklch(51.6% 0.082 174.9)
- #8D536A
#8D536A
oklch(51.6% 0.083 355.1)
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 #287765, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.030
- Bluegreen #017A79 ΔE 0.030
- Deep Turquoise #017374 ΔE 0.033
- Deep Aqua #08787F ΔE 0.040
- Teal #008080 ΔE 0.042
- Dark Aqua #05696B ΔE 0.053
- Dark Green Blue #1F6357 ΔE 0.064
- Ocean #017B92 ΔE 0.068
Use #287765 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.