#425E55
Closest named color: Dark Green Blue (#1F6357). oklch(45.7% 0.036 172.7), rgb(66, 94, 85).
Aa
White text reads best on this color (7.08:1).
About this color
#425E55 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.036 and its hue 173°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.034 away. White text reads best on it, at 7.08:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.96:1 |
| White text | 7.08:1 |
Values
| HEX | #425E55 |
| RGB | rgb(66, 94, 85) |
| HSL | hsl(161, 18%, 31%) |
| OKLCH | oklch(45.7% 0.036 172.7) |
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 #425E55 | 7.08:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #425E55 | 2.96:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #425E55 text on white | 7.08:1 | AAA | Lc 84.5 | Fine for body text |
| #425E55 text on black | 2.96:1 | Fails | Lc -17.4 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D2DCD8
oklch(88.6% 0.012 170.2)
-
Step 300
300
#B3C5BF
oklch(80.8% 0.021 173.8)
-
Step 400
400
#8CA89E
oklch(70.7% 0.034 171.7)
-
Step 500
500
#6F9287
oklch(63% 0.042 173.6)
-
Step 600
600
#567D70
oklch(55.7% 0.048 171.7)
-
Step 700
700
#46695E
oklch(49.1% 0.044 172.8)
-
Step 800
800 (this color)
#425E55
oklch(45.7% 0.036 172.7)
-
Step 900
900
#324740
oklch(37.8% 0.029 172.1)
-
Step 950
950
#1D2925
oklch(26.8% 0.018 172.4)
#425E55 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) | #5C5A55 | 0.038 |
| Deuteranopia (no green cones) | #575756 | 0.036 |
| Tritanopia (no blue cones) | #3B5F5B | 0.011 |
| Achromatopsia (no color) | #585858 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425E55
#425E55
oklch(45.7% 0.036 172.7)
- #684F59
#684F59
oklch(45.7% 0.037 352.8)
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 #425E55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.034
- Dark Aqua #05696B ΔE 0.051
- Petrol #005F6A ΔE 0.053
- Slate #516572 ΔE 0.053
- Dark Slate Gray #2F4F4F ΔE 0.056
- Pine #2B5D34 ΔE 0.060
- YInMn Blue #415A77 ΔE 0.062
- Deep Teal #00555A ΔE 0.063
Use #425E55 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.