#285163
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.3% 0.055 228.8), rgb(40, 81, 99).
Aa
White text reads best on this color (8.58:1).
About this color
#285163 is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.055 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.033 away. White text reads best on it, at 8.58:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.44:1 |
| White text | 8.58:1 |
Values
| HEX | #285163 |
| RGB | rgb(40, 81, 99) |
| HSL | hsl(198, 42%, 27%) |
| OKLCH | oklch(41.3% 0.055 228.8) |
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 #285163 | 8.58:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #285163 | 2.44:1 | Fails | Lc 14.6 | Not readable |
| #285163 text on white | 8.58:1 | AAA | Lc 89.4 | Fine for body text |
| #285163 text on black | 2.44:1 | Fails | Lc -12.9 | Not readable |
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 800.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDCE3
oklch(88.6% 0.018 229)
-
Step 300
300
#ACC5D1
oklch(80.9% 0.032 228.3)
-
Step 400
400
#80A7BA
oklch(70.6% 0.051 229.3)
-
Step 500
500
#5E91A9
oklch(63% 0.065 229.3)
-
Step 600
600
#437B95
oklch(55.5% 0.072 229.9)
-
Step 700
700
#34687F
oklch(49.1% 0.067 229.1)
-
Step 800
800 (this color)
#285163
oklch(41.3% 0.055 228.8)
-
Step 900
900
#284654
oklch(37.7% 0.043 229.5)
-
Step 950
950
#182931
oklch(27% 0.027 229.2)
#285163 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) | #485064 | 0.040 |
| Deuteranopia (no green cones) | #3F4963 | 0.035 |
| Tritanopia (no blue cones) | #005657 | 0.038 |
| Achromatopsia (no color) | #4C4C4C | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285163
#285163
oklch(41.3% 0.055 228.8)
- #644230
#644230
oklch(41.3% 0.055 48.6)
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 #285163, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.033
- Deep Teal #00555A ΔE 0.033
- Dark Grey Blue #29465B ΔE 0.035
- Charcoal #264653 ΔE 0.040
- Petrol #005F6A ΔE 0.044
- Dark Teal #014D4E ΔE 0.047
- YInMn Blue #415A77 ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.053
Use #285163 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.