#287770
Closest named color: Bluegreen (#017A79). oklch(52% 0.076 186.8), rgb(40, 119, 112).
Aa
White text reads best on this color (5.29:1).
About this color
#287770 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.076 and its hue 187°. 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 5.29:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 3.96:1 |
| White text | 5.29:1 |
Values
| HEX | #287770 |
| RGB | rgb(40, 119, 112) |
| HSL | hsl(175, 50%, 31%) |
| OKLCH | oklch(52% 0.076 186.8) |
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 #287770 | 5.29:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #287770 | 3.96:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #287770 text on white | 5.29:1 | AA | Lc 76.1 | Fine for body text |
| #287770 text on black | 3.96:1 | AA large text | Lc -25.7 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CBDEDB
oklch(88.6% 0.021 185.4)
-
Step 300
300
#A7C9C4
oklch(81% 0.037 185.6)
-
Step 400
400
#75ADA6
oklch(70.7% 0.06 186.1)
-
Step 500
500
#4E9891
oklch(63% 0.075 187.4)
-
Step 600
600
#2C837B
oklch(55.7% 0.082 186.5)
-
Step 700
700 (this color)
#287770
oklch(52% 0.076 186.8)
-
Step 800
800
#1B5A55
oklch(42.7% 0.063 187.6)
-
Step 900
900
#1E4A46
oklch(37.7% 0.049 187.3)
-
Step 950
950
#132B29
oklch(26.9% 0.03 188.5)
#287770 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) | #717070 | 0.082 |
| Deuteranopia (no green cones) | #656871 | 0.076 |
| Tritanopia (no blue cones) | #007A75 | 0.015 |
| Achromatopsia (no color) | #6B6B6B | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #287770
#287770
oklch(52% 0.076 186.8)
- #8E5661
#8E5661
oklch(52% 0.075 7.3)
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 #287770, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.017
- Dark Aquamarine #017371 ΔE 0.022
- Deep Turquoise #017374 ΔE 0.023
- Deep Aqua #08787F ΔE 0.024
- Teal #008080 ΔE 0.031
- Dark Aqua #05696B ΔE 0.049
- Ocean #017B92 ΔE 0.052
- Dark Cyan #008B8B ΔE 0.062
Use #287770 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.