#425C55
Closest named color: Dark Green Blue (#1F6357). oklch(45.2% 0.033 176.3), rgb(66, 92, 85).
Aa
White text reads best on this color (7.25:1).
About this color
#425C55 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.033 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.037 away. White text reads best on it, at 7.25:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.89:1 |
| White text | 7.25:1 |
Values
| HEX | #425C55 |
| RGB | rgb(66, 92, 85) |
| HSL | hsl(164, 16%, 31%) |
| OKLCH | oklch(45.2% 0.033 176.3) |
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 #425C55 | 7.25:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #425C55 | 2.89:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #425C55 text on white | 7.25:1 | AAA | Lc 85.2 | Fine for body text |
| #425C55 text on black | 2.89:1 | Fails | Lc -16.8 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D2DCD9
oklch(88.6% 0.012 176.3)
-
Step 300
300
#B4C5C0
oklch(80.9% 0.02 176.3)
-
Step 400
400
#8DA7A0
oklch(70.6% 0.031 177.3)
-
Step 500
500
#709289
oklch(63.2% 0.04 176.9)
-
Step 600
600
#587C72
oklch(55.6% 0.044 175.5)
-
Step 700
700
#486860
oklch(49% 0.039 177.3)
-
Step 800
800 (this color)
#425C55
oklch(45.2% 0.033 176.3)
-
Step 900
900
#334641
oklch(37.6% 0.026 176.9)
-
Step 950
950
#1E2926
oklch(26.9% 0.016 176.5)
#425C55 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) | #5A5955 | 0.035 |
| Deuteranopia (no green cones) | #555556 | 0.034 |
| Tritanopia (no blue cones) | #3B5D5A | 0.010 |
| Achromatopsia (no color) | #575757 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425C55
#425C55
oklch(45.2% 0.033 176.3)
- #654E56
#654E56
oklch(45.1% 0.033 355.7)
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 #425C55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.050
- Petrol #005F6A ΔE 0.052
- Dark Aqua #05696B ΔE 0.054
- Slate #516572 ΔE 0.055
- YInMn Blue #415A77 ΔE 0.059
- Deep Teal #00555A ΔE 0.060
- Pine #2B5D34 ΔE 0.062
Use #425C55 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.