#287B73
Closest named color: Bluegreen (#017A79). oklch(53.1% 0.079 186), rgb(40, 123, 115).
Aa
White text reads best on this color (5.03:1).
About this color
#287B73 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.079 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.017 away. White text reads best on it, at 5.03:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.17:1 |
| White text | 5.03:1 |
Values
| HEX | #287B73 |
| RGB | rgb(40, 123, 115) |
| HSL | hsl(174, 51%, 32%) |
| OKLCH | oklch(53.1% 0.079 186) |
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 #287B73 | 5.03:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #287B73 | 4.17:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #287B73 text on white | 5.03:1 | AA | Lc 74.5 | Content text, not long reading |
| #287B73 text on black | 4.17:1 | AA large text | Lc -27.2 | 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 600.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CBDEDB
oklch(88.6% 0.021 185.4)
-
Step 300
300
#A8C9C4
oklch(81% 0.036 185.3)
-
Step 400
400
#77ADA6
oklch(70.8% 0.058 185.9)
-
Step 500
500
#519890
oklch(63.1% 0.073 186.1)
-
Step 600
600 (this color)
#287B73
oklch(53.1% 0.079 186)
-
Step 700
700
#226E67
oklch(49.1% 0.074 186.3)
-
Step 800
800
#1F5A54
oklch(42.8% 0.061 185.9)
-
Step 900
900
#204A45
oklch(37.7% 0.048 185.1)
-
Step 950
950
#142B29
oklch(26.9% 0.029 188.3)
#287B73 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) | #757473 | 0.085 |
| Deuteranopia (no green cones) | #686B74 | 0.079 |
| Tritanopia (no blue cones) | #007E78 | 0.014 |
| Achromatopsia (no color) | #6F6F6F | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #287B73
#287B73
oklch(53.1% 0.079 186)
- #935865
#935865
oklch(53.1% 0.079 5.9)
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 #287B73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.017
- Teal #008080 ΔE 0.022
- Deep Aqua #08787F ΔE 0.026
- Dark Aquamarine #017371 ΔE 0.031
- Deep Turquoise #017374 ΔE 0.032
- Ocean #017B92 ΔE 0.050
- Dark Cyan #008B8B ΔE 0.051
- Dark Aqua #05696B ΔE 0.061
Use #287B73 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.