#375651
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.7% 0.038 183.3), rgb(55, 86, 81).
Aa
White text reads best on this color (8.03:1).
About this color
#375651 is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.038 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.026 away. White text reads best on it, at 8.03:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.61:1 |
| White text | 8.03:1 |
Values
| HEX | #375651 |
| RGB | rgb(55, 86, 81) |
| HSL | hsl(170, 22%, 28%) |
| OKLCH | oklch(42.7% 0.038 183.3) |
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 #375651 | 8.03:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #375651 | 2.61:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #375651 text on white | 8.03:1 | AAA | Lc 87.8 | Fine for body text |
| #375651 text on black | 2.61:1 | Fails | Lc -14.3 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5EBEA
oklch(93.5% 0.007 185.3)
-
Step 200
200
#D1DCDA
oklch(88.6% 0.012 184)
-
Step 300
300
#B2C5C2
oklch(80.8% 0.021 185.4)
-
Step 400
400
#89A8A3
oklch(70.7% 0.035 184.5)
-
Step 500
500
#6B938C
oklch(63.2% 0.045 182.8)
-
Step 600
600
#527D76
oklch(55.6% 0.049 183.2)
-
Step 700
700
#426963
oklch(49% 0.045 183.7)
-
Step 800
800 (this color)
#375651
oklch(42.7% 0.038 183.3)
-
Step 900
900
#304743
oklch(37.8% 0.029 182.7)
-
Step 950
950
#1C2A27
oklch(27.1% 0.02 180)
#375651 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) | #535351 | 0.040 |
| Deuteranopia (no green cones) | #4E4F51 | 0.037 |
| Tritanopia (no blue cones) | #2D5754 | 0.011 |
| Achromatopsia (no color) | #505050 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375651
#375651
oklch(42.7% 0.038 183.3)
- #61474D
#61474D
oklch(42.8% 0.037 3.4)
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 #375651, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.026
- Deep Teal #00555A ΔE 0.040
- Dark Green Blue #1F6357 ΔE 0.042
- Dark Blue Green #005249 ΔE 0.047
- Petrol #005F6A ΔE 0.048
- Dark Teal #014D4E ΔE 0.055
- Pine #2B5D34 ΔE 0.060
- Charcoal #264653 ΔE 0.060
Use #375651 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.