#375F63
Closest named color: Petrol (#005F6A). oklch(45.8% 0.046 203.9), rgb(55, 95, 99).
Aa
White text reads best on this color (7.04:1).
About this color
#375F63 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.046 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.034 away. White text reads best on it, at 7.04:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.97:1 |
| White text | 7.04:1 |
Values
| HEX | #375F63 |
| RGB | rgb(55, 95, 99) |
| HSL | hsl(185, 29%, 30%) |
| OKLCH | oklch(45.8% 0.046 203.9) |
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 #375F63 | 7.04:1 | AAA | Lc -89.3 | Fine for body text |
| Black text on #375F63 | 2.97:1 | Fails | Lc 19.7 | Dividers and decoration only |
| #375F63 text on white | 7.04:1 | AAA | Lc 84.3 | Fine for body text |
| #375F63 text on black | 2.97:1 | Fails | Lc -17.6 | 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
#E4EBEC
oklch(93.5% 0.008 207.1)
-
Step 200
200
#CFDCDD
oklch(88.5% 0.014 202.4)
-
Step 300
300
#AEC6C8
oklch(80.9% 0.026 202.8)
-
Step 400
400
#82A9AD
oklch(70.8% 0.043 204)
-
Step 500
500
#619399
oklch(63% 0.054 205.4)
-
Step 600
600
#467E83
oklch(55.7% 0.06 203)
-
Step 700
700
#376A6F
oklch(49.1% 0.055 203.8)
-
Step 800
800 (this color)
#375F63
oklch(45.8% 0.046 203.9)
-
Step 900
900
#2A474A
oklch(37.6% 0.035 204.1)
-
Step 950
950
#192A2B
oklch(27.1% 0.023 200.6)
#375F63 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) | #595C63 | 0.045 |
| Deuteranopia (no green cones) | #525663 | 0.043 |
| Tritanopia (no blue cones) | #236260 | 0.021 |
| Achromatopsia (no color) | #595959 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375F63
#375F63
oklch(45.8% 0.046 203.9)
- #6F4E4B
#6F4E4B
oklch(45.9% 0.045 24.8)
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 #375F63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.034
- Dark Green Blue #1F6357 ΔE 0.035
- Dark Aqua #05696B ΔE 0.038
- YInMn Blue #415A77 ΔE 0.043
- Slate #516572 ΔE 0.045
- Deep Teal #00555A ΔE 0.054
- Dark Slate Gray #2F4F4F ΔE 0.056
- Dusty Grape #545775 ΔE 0.059
Use #375F63 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.