#377573
Closest named color: Bluegreen (#017A79). oklch(52.1% 0.064 192.6), rgb(55, 117, 115).
Aa
White text reads best on this color (5.31:1).
About this color
#377573 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.064 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.026 away. White text reads best on it, at 5.31:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 3.95:1 |
| White text | 5.31:1 |
Values
| HEX | #377573 |
| RGB | rgb(55, 117, 115) |
| HSL | hsl(178, 36%, 34%) |
| OKLCH | oklch(52.1% 0.064 192.6) |
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 #377573 | 5.31:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #377573 | 3.95:1 | AA large text | Lc 27.8 | Dividers and decoration only |
| #377573 text on white | 5.31:1 | AA | Lc 76.3 | Fine for body text |
| #377573 text on black | 3.95:1 | AA large text | Lc -25.5 | 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 700.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CDDDDC
oklch(88.5% 0.017 192.3)
-
Step 300
300
#ABC7C6
oklch(80.9% 0.03 193.9)
-
Step 400
400
#7DABA9
oklch(70.8% 0.049 192.7)
-
Step 500
500
#599694
oklch(63.1% 0.064 193)
-
Step 600
600
#3C807E
oklch(55.5% 0.069 192.8)
-
Step 700
700 (this color)
#377573
oklch(52.1% 0.064 192.6)
-
Step 800
800
#275857
oklch(42.6% 0.053 193.6)
-
Step 900
900
#254947
oklch(37.8% 0.042 190.9)
-
Step 950
950
#162B2A
oklch(27.1% 0.027 191.8)
#377573 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) | #6F7073 | 0.068 |
| Deuteranopia (no green cones) | #646874 | 0.063 |
| Tritanopia (no blue cones) | #0C7874 | 0.023 |
| Achromatopsia (no color) | #6B6B6B | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #377573
#377573
oklch(52.1% 0.064 192.6)
- #8A5A5F
#8A5A5F
oklch(52.1% 0.064 12.7)
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 #377573, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.026
- Deep Aqua #08787F ΔE 0.026
- Deep Turquoise #017374 ΔE 0.028
- Dark Aquamarine #017371 ΔE 0.029
- Teal #008080 ΔE 0.036
- Ocean #017B92 ΔE 0.049
- Dark Aqua #05696B ΔE 0.051
- Slate #516572 ΔE 0.053
Use #377573 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.