#375C57
Closest named color: Dark Green Blue (#1F6357). oklch(44.5% 0.043 184.9), rgb(55, 92, 87).
Aa
White text reads best on this color (7.41:1).
About this color
#375C57 is a dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.043 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.029 away. White text reads best on it, at 7.41:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.83:1 |
| White text | 7.41:1 |
Values
| HEX | #375C57 |
| RGB | rgb(55, 92, 87) |
| HSL | hsl(172, 25%, 29%) |
| OKLCH | oklch(44.5% 0.043 184.9) |
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 #375C57 | 7.41:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #375C57 | 2.83:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #375C57 text on white | 7.41:1 | AAA | Lc 85.7 | Fine for body text |
| #375C57 text on black | 2.83:1 | Fails | Lc -16.3 | Dividers and decoration only |
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
#E5EBEA
oklch(93.5% 0.007 185.3)
-
Step 200
200
#CFDCDA
oklch(88.4% 0.014 185.9)
-
Step 300
300
#AFC6C3
oklch(80.8% 0.025 187.2)
-
Step 400
400
#85A9A4
oklch(70.7% 0.04 185.9)
-
Step 500
500
#65948D
oklch(63.1% 0.052 184.4)
-
Step 600
600
#4B7E77
oklch(55.5% 0.056 184.6)
-
Step 700
700
#3C6B64
oklch(49.2% 0.053 183.5)
-
Step 800
800 (this color)
#375C57
oklch(44.5% 0.043 184.9)
-
Step 900
900
#2C4844
oklch(37.8% 0.035 184.5)
-
Step 950
950
#1A2A28
oklch(27% 0.022 186.2)
#375C57 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) | #595857 | 0.047 |
| Deuteranopia (no green cones) | #525358 | 0.044 |
| Tritanopia (no blue cones) | #2A5D5A | 0.013 |
| Achromatopsia (no color) | #555555 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375C57
#375C57
oklch(44.5% 0.043 184.9)
- #694A51
#694A51
oklch(44.5% 0.043 4.1)
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 #375C57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.029
- Petrol #005F6A ΔE 0.041
- Dark Slate Gray #2F4F4F ΔE 0.043
- Dark Aqua #05696B ΔE 0.047
- Deep Teal #00555A ΔE 0.047
- Dark Blue Green #005249 ΔE 0.058
- YInMn Blue #415A77 ΔE 0.059
- Pine #2B5D34 ΔE 0.059
Use #375C57 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.