#425E59
Closest named color: Dark Green Blue (#1F6357). oklch(45.8% 0.034 182.5), rgb(66, 94, 89).
Aa
White text reads best on this color (7.05:1).
About this color
#425E59 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.034 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.036 away. White text reads best on it, at 7.05:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.97:1 |
| White text | 7.05:1 |
Values
| HEX | #425E59 |
| RGB | rgb(66, 94, 89) |
| HSL | hsl(169, 18%, 31%) |
| OKLCH | oklch(45.8% 0.034 182.5) |
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 #425E59 | 7.05:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #425E59 | 2.97:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #425E59 text on white | 7.05:1 | AAA | Lc 84.4 | Fine for body text |
| #425E59 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D2DCDA
oklch(88.6% 0.011 182.8)
-
Step 300
300
#B3C5C1
oklch(80.9% 0.02 181)
-
Step 400
400
#8BA7A2
oklch(70.6% 0.032 183.4)
-
Step 500
500
#6E928B
oklch(63.1% 0.041 181.6)
-
Step 600
600
#567C75
oklch(55.6% 0.044 181.9)
-
Step 700
700
#466963
oklch(49.2% 0.041 182.7)
-
Step 800
800 (this color)
#425E59
oklch(45.8% 0.034 182.5)
-
Step 900
900
#324643
oklch(37.6% 0.026 184.7)
-
Step 950
950
#1D2927
oklch(26.9% 0.017 183.7)
#425E59 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) | #5B5B59 | 0.036 |
| Deuteranopia (no green cones) | #565759 | 0.034 |
| Tritanopia (no blue cones) | #3A5F5C | 0.010 |
| Achromatopsia (no color) | #595959 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425E59
#425E59
oklch(45.8% 0.034 182.5)
- #685056
#685056
oklch(45.8% 0.033 1.8)
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 #425E59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.036
- Slate #516572 ΔE 0.048
- Dark Aqua #05696B ΔE 0.049
- Petrol #005F6A ΔE 0.050
- YInMn Blue #415A77 ΔE 0.055
- Dark Slate Gray #2F4F4F ΔE 0.056
- Deep Teal #00555A ΔE 0.063
- Dusty Grape #545775 ΔE 0.064
Use #425E59 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.