#375D57
Closest named color: Dark Green Blue (#1F6357). oklch(44.8% 0.045 183.1), rgb(55, 93, 87).
Aa
White text reads best on this color (7.32:1).
About this color
#375D57 is a dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.045 and its hue 183°. 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 7.32:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.86:1 |
| White text | 7.32:1 |
Values
| HEX | #375D57 |
| RGB | rgb(55, 93, 87) |
| HSL | hsl(171, 26%, 29%) |
| OKLCH | oklch(44.8% 0.045 183.1) |
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 #375D57 | 7.32:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #375D57 | 2.86:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #375D57 text on white | 7.32:1 | AAA | Lc 85.4 | Fine for body text |
| #375D57 text on black | 2.86:1 | Fails | Lc -16.6 | 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
#AFC6C2
oklch(80.8% 0.026 184.1)
-
Step 400
400
#84AAA3
oklch(70.8% 0.043 182.5)
-
Step 500
500
#64948C
oklch(63% 0.053 183)
-
Step 600
600
#4A7F76
oklch(55.7% 0.059 182)
-
Step 700
700
#3B6B64
oklch(49.1% 0.054 183.7)
-
Step 800
800 (this color)
#375D57
oklch(44.8% 0.045 183.1)
-
Step 900
900
#2C4843
oklch(37.8% 0.035 181.9)
-
Step 950
950
#1A2A27
oklch(27% 0.022 181.6)
#375D57 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) | #5A5957 | 0.048 |
| Deuteranopia (no green cones) | #535458 | 0.045 |
| Tritanopia (no blue cones) | #295E5B | 0.014 |
| Achromatopsia (no color) | #565656 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375D57
#375D57
oklch(44.8% 0.045 183.1)
- #6A4A52
#6A4A52
oklch(44.7% 0.045 2.6)
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 #375D57, 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 0.041
- Dark Aqua #05696B ΔE 0.045
- Dark Slate Gray #2F4F4F ΔE 0.046
- Deep Teal #00555A ΔE 0.050
- Pine #2B5D34 ΔE 0.058
- YInMn Blue #415A77 ΔE 0.060
- Slate #516572 ΔE 0.060
Use #375D57 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.