#245151
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.3% 0.049 195.4), rgb(36, 81, 81).
Aa
White text reads best on this color (8.85:1).
About this color
#245151 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.049 and its hue 195°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.012 away. White text reads best on it, at 8.85:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.37:1 |
| White text | 8.85:1 |
Values
| HEX | #245151 |
| RGB | rgb(36, 81, 81) |
| HSL | hsl(180, 38%, 23%) |
| OKLCH | oklch(40.3% 0.049 195.4) |
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 #245151 | 8.85:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #245151 | 2.37:1 | Fails | Lc 13.8 | Not readable |
| #245151 text on white | 8.85:1 | AAA | Lc 90.1 | Preferred for body text |
| #245151 text on black | 2.37:1 | Fails | Lc -12.1 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CEDDDC
oklch(88.6% 0.016 192)
-
Step 300
300
#ACC7C6
oklch(80.9% 0.029 193.9)
-
Step 400
400
#7FAAAA
oklch(70.7% 0.046 196.2)
-
Step 500
500
#5D9595
oklch(63.1% 0.059 195.8)
-
Step 600
600
#417F7F
oklch(55.5% 0.064 195.5)
-
Step 700
700
#326B6B
oklch(49% 0.06 195.4)
-
Step 800
800 (this color)
#245151
oklch(40.3% 0.049 195.4)
-
Step 900
900
#274848
oklch(37.7% 0.039 195.6)
-
Step 950
950
#182A2A
oklch(26.9% 0.024 195.8)
#245151 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) | #4C4D51 | 0.052 |
| Deuteranopia (no green cones) | #444851 | 0.047 |
| Tritanopia (no blue cones) | #045351 | 0.019 |
| Achromatopsia (no color) | #4A4A4A | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #245151
#245151
oklch(40.3% 0.049 195.4)
- #613E40
#613E40
oklch(40.5% 0.049 15.7)
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 #245151, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.012
- Deep Teal #00555A ΔE 0.022
- Dark Blue Green #005249 ΔE 0.027
- Dark Teal #014D4E ΔE 0.027
- Charcoal #264653 ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.045
- Petrol #005F6A ΔE 0.051
- Charcoal Grey #3C4142 ΔE 0.054
Use #245151 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.