#375E59
Closest named color: Dark Green Blue (#1F6357). oklch(45.1% 0.045 185.4), rgb(55, 94, 89).
Aa
White text reads best on this color (7.22:1).
About this color
#375E59 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.045 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.026 away. White text reads best on it, at 7.22:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.90:1 |
| White text | 7.22:1 |
Values
| HEX | #375E59 |
| RGB | rgb(55, 94, 89) |
| HSL | hsl(172, 26%, 29%) |
| OKLCH | oklch(45.1% 0.045 185.4) |
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 #375E59 | 7.22:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #375E59 | 2.90:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #375E59 text on white | 7.22:1 | AAA | Lc 85.0 | Fine for body text |
| #375E59 text on black | 2.90:1 | Fails | Lc -17.0 | 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
#E5ECEA
oklch(93.7% 0.008 177.3)
-
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
#83AAA4
oklch(70.8% 0.043 184.7)
-
Step 500
500
#63948E
oklch(63% 0.054 186.3)
-
Step 600
600
#497F78
oklch(55.7% 0.059 185.1)
-
Step 700
700
#3A6B65
oklch(49.1% 0.054 185.5)
-
Step 800
800 (this color)
#375E59
oklch(45.1% 0.045 185.4)
-
Step 900
900
#2B4844
oklch(37.7% 0.036 184.8)
-
Step 950
950
#1A2A28
oklch(27% 0.022 186.2)
#375E59 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) | #5A5A59 | 0.048 |
| Deuteranopia (no green cones) | #54555A | 0.046 |
| Tritanopia (no blue cones) | #28605C | 0.014 |
| Achromatopsia (no color) | #575757 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375E59
#375E59
oklch(45.1% 0.045 185.4)
- #6C4B52
#6C4B52
oklch(45.1% 0.046 5.1)
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 #375E59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.026
- Petrol #005F6A ΔE 0.040
- Dark Aqua #05696B ΔE 0.042
- Dark Slate Gray #2F4F4F ΔE 0.049
- Deep Teal #00555A ΔE 0.051
- Slate #516572 ΔE 0.057
- YInMn Blue #415A77 ΔE 0.058
- Pine #2B5D34 ΔE 0.060
Use #375E59 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.