#288290
Closest named color: Teal Blue (#01889F). oklch(56.1% 0.084 210), rgb(40, 130, 144).
Aa
Black text reads best on this color (4.68:1).
About this color
#288290 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.084 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.025 away. Black text reads best on it, at 4.68:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.68:1 |
| White text | 4.48:1 |
Values
| HEX | #288290 |
| RGB | rgb(40, 130, 144) |
| HSL | hsl(188, 57%, 36%) |
| OKLCH | oklch(56.1% 0.084 210) |
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 #288290 | 4.48:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #288290 | 4.68:1 | AA | Lc 33.3 | Non-text elements, placeholder text |
| #288290 text on white | 4.48:1 | AA large text | Lc 70.8 | Content text, not long reading |
| #288290 text on black | 4.68:1 | AA | Lc -30.9 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CADDE1
oklch(88.5% 0.021 211.8)
-
Step 300
300
#A5C8CE
oklch(80.9% 0.038 209.1)
-
Step 400
400
#73ABB6
oklch(70.6% 0.061 211.2)
-
Step 500
500
#4A96A3
oklch(63% 0.077 210.1)
-
Step 600
600 (this color)
#288290
oklch(56.1% 0.084 210)
-
Step 700
700
#166D79
oklch(49.2% 0.079 209.1)
-
Step 800
800
#175963
oklch(42.9% 0.065 209.7)
-
Step 900
900
#1B4950
oklch(37.7% 0.051 208.9)
-
Step 950
950
#112B2F
oklch(27% 0.033 208.6)
#288290 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) | #767D91 | 0.080 |
| Deuteranopia (no green cones) | #677290 | 0.073 |
| Tritanopia (no blue cones) | #008886 | 0.030 |
| Achromatopsia (no color) | #777777 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #288290
#288290
oklch(56.1% 0.084 210)
- #A06157
#A06157
oklch(56% 0.084 29.7)
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 #288290, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.025
- Ocean #017B92 ΔE 0.028
- Teal #008080 ΔE 0.030
- Dark Cyan #008B8B ΔE 0.032
- Cerulean #457B9D ΔE 0.040
- Deep Aqua #08787F ΔE 0.041
- Bluegreen #017A79 ΔE 0.044
- Stormy Blue #507B9C ΔE 0.046
Use #288290 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.