#425F55
Closest named color: Dark Green Blue (#1F6357). oklch(45.9% 0.038 171.2), rgb(66, 95, 85).
Aa
White text reads best on this color (7.00:1).
About this color
#425F55 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.038 and its hue 171°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.033 away. White text reads best on it, at 7.00:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.99:1 |
| White text | 7.00:1 |
Values
| HEX | #425F55 |
| RGB | rgb(66, 95, 85) |
| HSL | hsl(159, 18%, 32%) |
| OKLCH | oklch(45.9% 0.038 171.2) |
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 #425F55 | 7.00:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #425F55 | 2.99:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #425F55 text on white | 7.00:1 | AAA | Lc 84.2 | Fine for body text |
| #425F55 text on black | 2.99:1 | Fails | Lc -17.8 | 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 700.
-
Step 50
50
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D3DBD8
oklch(88.4% 0.01 171.8)
-
Step 300
300
#B5C5BF
oklch(80.9% 0.019 171.4)
-
Step 400
400
#8FA79E
oklch(70.7% 0.03 170.8)
-
Step 500
500
#739186
oklch(63% 0.038 170.7)
-
Step 600
600
#5B7B70
oklch(55.5% 0.04 171.6)
-
Step 700
700 (this color)
#425F55
oklch(45.9% 0.038 171.2)
-
Step 800
800
#3E554D
oklch(42.8% 0.031 171.4)
-
Step 900
900
#354640
oklch(37.7% 0.024 171.4)
-
Step 950
950
#1F2925
oklch(27% 0.016 168.8)
#425F55 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) | #5D5B55 | 0.039 |
| Deuteranopia (no green cones) | #585856 | 0.037 |
| Tritanopia (no blue cones) | #3B5F5C | 0.013 |
| Achromatopsia (no color) | #595959 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425F55
#425F55
oklch(45.9% 0.038 171.2)
- #694F5A
#694F5A
oklch(45.9% 0.038 351.5)
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 #425F55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.033
- Dark Aqua #05696B ΔE 0.050
- Slate #516572 ΔE 0.052
- Petrol #005F6A ΔE 0.054
- Dark Slate Gray #2F4F4F ΔE 0.059
- Pine #2B5D34 ΔE 0.060
- YInMn Blue #415A77 ΔE 0.063
- Deep Teal #00555A ΔE 0.065
Use #425F55 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.