#375A59
Closest named color: Dark Green Blue (#1F6357). oklch(44.1% 0.041 193.5), rgb(55, 90, 89).
Aa
White text reads best on this color (7.58:1).
About this color
#375A59 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.041 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.035 away. White text reads best on it, at 7.58:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.76:1 |
| White text | 7.58:1 |
Values
| HEX | #375A59 |
| RGB | rgb(55, 90, 89) |
| HSL | hsl(178, 24%, 28%) |
| OKLCH | oklch(44.1% 0.041 193.5) |
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 #375A59 | 7.58:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #375A59 | 2.76:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #375A59 text on white | 7.58:1 | AAA | Lc 86.3 | Fine for body text |
| #375A59 text on black | 2.76:1 | Fails | Lc -15.8 | 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
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#D0DCDB
oklch(88.5% 0.013 190.9)
-
Step 300
300
#B0C6C5
oklch(81% 0.024 193.4)
-
Step 400
400
#86A8A7
oklch(70.6% 0.037 194.1)
-
Step 500
500
#679392
oklch(63.1% 0.048 194.2)
-
Step 600
600
#4D7D7C
oklch(55.5% 0.052 194.1)
-
Step 700
700
#3E6A69
oklch(49.2% 0.049 193.8)
-
Step 800
800 (this color)
#375A59
oklch(44.1% 0.041 193.5)
-
Step 900
900
#2D4746
oklch(37.7% 0.032 192.8)
-
Step 950
950
#1B2A29
oklch(27.1% 0.02 190.8)
#375A59 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) | #565759 | 0.043 |
| Deuteranopia (no green cones) | #505259 | 0.040 |
| Tritanopia (no blue cones) | #295C5A | 0.014 |
| Achromatopsia (no color) | #545454 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375A59
#375A59
oklch(44.1% 0.041 193.5)
- #674A4C
#674A4C
oklch(44.1% 0.04 14.2)
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 #375A59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.035
- Dark Slate Gray #2F4F4F ΔE 0.038
- Petrol #005F6A ΔE 0.039
- Deep Teal #00555A ΔE 0.044
- Dark Aqua #05696B ΔE 0.050
- YInMn Blue #415A77 ΔE 0.053
- Dark Blue Green #005249 ΔE 0.057
- Slate #516572 ΔE 0.061
Use #375A59 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.