#375354
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42% 0.034 198.8), rgb(55, 83, 84).
Aa
White text reads best on this color (8.30:1).
About this color
#375354 is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.034 and its hue 199°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.018 away. White text reads best on it, at 8.30:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.52:1 |
| White text | 8.30:1 |
Values
| HEX | #375354 |
| RGB | rgb(55, 83, 84) |
| HSL | hsl(182, 21%, 27%) |
| OKLCH | oklch(42% 0.034 198.8) |
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 #375354 | 8.30:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #375354 | 2.52:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #375354 text on white | 8.30:1 | AAA | Lc 88.6 | Fine for body text |
| #375354 text on black | 2.52:1 | Fails | Lc -13.5 | 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
#E6EBEB
oklch(93.6% 0.005 197.1)
-
Step 200
200
#D1DBDC
oklch(88.4% 0.011 204.1)
-
Step 300
300
#B3C5C5
oklch(81% 0.02 196.8)
-
Step 400
400
#8BA7A8
oklch(70.8% 0.031 199.1)
-
Step 500
500
#6D9192
oklch(63% 0.04 198.3)
-
Step 600
600
#557B7D
oklch(55.5% 0.043 200.1)
-
Step 700
700
#456869
oklch(49.1% 0.04 198.2)
-
Step 800
800 (this color)
#375354
oklch(42% 0.034 198.8)
-
Step 900
900
#314647
oklch(37.7% 0.026 199.8)
-
Step 950
950
#1D2929
oklch(27% 0.017 196.2)
#375354 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) | #4F5054 | 0.034 |
| Deuteranopia (no green cones) | #4A4C54 | 0.033 |
| Tritanopia (no blue cones) | #2C5553 | 0.014 |
| Achromatopsia (no color) | #4E4E4E | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375354
#375354
oklch(42% 0.034 198.8)
- #5E4646
#5E4646
oklch(42% 0.033 18.6)
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 #375354, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.018
- Deep Teal #00555A ΔE 0.038
- Dark Blue Green #005249 ΔE 0.048
- Charcoal #264653 ΔE 0.050
- Petrol #005F6A ΔE 0.050
- Dark Teal #014D4E ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.052
- Dark Green Blue #1F6357 ΔE 0.052
Use #375354 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.