#3E555E
Closest named color: Dark Slate Gray (#2F4F4F). oklch(43.4% 0.032 224), rgb(62, 85, 94).
Aa
White text reads best on this color (7.87:1).
About this color
#3E555E is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.032 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.036 away. White text reads best on it, at 7.87:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.66:1 |
| White text | 7.87:1 |
Values
| HEX | #3E555E |
| RGB | rgb(62, 85, 94) |
| HSL | hsl(197, 21%, 31%) |
| OKLCH | oklch(43.4% 0.032 224) |
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 #3E555E | 7.87:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #3E555E | 2.66:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #3E555E text on white | 7.87:1 | AAA | Lc 87.3 | Fine for body text |
| #3E555E text on black | 2.66:1 | Fails | Lc -14.8 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D2DBDE
oklch(88.5% 0.011 219.6)
-
Step 300
300
#B5C3CA
oklch(80.9% 0.018 229.1)
-
Step 400
400
#8EA5AE
oklch(70.7% 0.029 223.4)
-
Step 500
500
#718F9B
oklch(63.1% 0.038 224.2)
-
Step 600
600
#597985
oklch(55.6% 0.041 223)
-
Step 700
700
#496671
oklch(49.2% 0.038 223.4)
-
Step 800
800 (this color)
#3E555E
oklch(43.4% 0.032 224)
-
Step 900
900
#33454B
oklch(37.7% 0.025 220.3)
-
Step 950
950
#1E282C
oklch(26.9% 0.016 224.2)
#3E555E 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) | #50545F | 0.026 |
| Deuteranopia (no green cones) | #4B505E | 0.023 |
| Tritanopia (no blue cones) | #335858 | 0.021 |
| Achromatopsia (no color) | #515151 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E555E
#3E555E
oklch(43.4% 0.032 224)
- #604C43
#604C43
oklch(43.5% 0.031 45.5)
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 #3E555E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.036
- YInMn Blue #415A77 ΔE 0.041
- Petrol #005F6A ΔE 0.048
- Deep Teal #00555A ΔE 0.049
- Dusty Grape #545775 ΔE 0.052
- Dark Green Blue #1F6357 ΔE 0.056
- Dark Grey Blue #29465B ΔE 0.058
- Charcoal #264653 ΔE 0.060
Use #3E555E 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.