#426D5B
Closest named color: Dark Aquamarine (#017371). oklch(49.8% 0.056 165.8), rgb(66, 109, 91).
Aa
White text reads best on this color (5.88:1).
About this color
#426D5B is a medium-dark, muted green. In OKLCH its lightness is 50%, its chroma 0.056 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.044 away. White text reads best on it, at 5.88:1.
| Hue family | Greens |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.056) |
| Temperature | in between |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.57:1 |
| White text | 5.88:1 |
Values
| HEX | #426D5B |
| RGB | rgb(66, 109, 91) |
| HSL | hsl(155, 25%, 34%) |
| OKLCH | oklch(49.8% 0.056 165.8) |
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 #426D5B | 5.88:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #426D5B | 3.57:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #426D5B text on white | 5.88:1 | AA | Lc 79.3 | Fine for body text |
| #426D5B text on black | 3.57:1 | AA large text | Lc -22.5 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5ECE8
oklch(93.7% 0.009 161.3)
-
Step 200
200
#D0DCD7
oklch(88.4% 0.015 169.2)
-
Step 300
300
#B1C7BC
oklch(81% 0.028 164.2)
-
Step 400
400
#88AA9A
oklch(70.8% 0.044 164.9)
-
Step 500
500
#699582
oklch(63.2% 0.056 166)
-
Step 600
600
#507F6B
oklch(55.7% 0.06 165.6)
-
Step 700
700 (this color)
#426D5B
oklch(49.8% 0.056 165.8)
-
Step 800
800
#355749
oklch(42.6% 0.046 166.3)
-
Step 900
900
#2F483D
oklch(37.8% 0.036 165.3)
-
Step 950
950
#1C2A24
oklch(27% 0.022 166.4)
#426D5B 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) | #6B675A | 0.056 |
| Deuteranopia (no green cones) | #64625C | 0.055 |
| Tritanopia (no blue cones) | #376D68 | 0.022 |
| Achromatopsia (no color) | #646464 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #426D5B
#426D5B
oklch(49.8% 0.056 165.8)
- #7A5669
#7A5669
oklch(49.8% 0.055 346.3)
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 #426D5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.044
- Deep Turquoise #017374 ΔE 0.047
- Dark Green Blue #1F6357 ΔE 0.048
- Dark Aqua #05696B ΔE 0.049
- Bluegreen #017A79 ΔE 0.055
- Slate #516572 ΔE 0.055
- Dark Moss Green #606C38 ΔE 0.056
- Dark Olive Green #556B2F ΔE 0.059
Use #426D5B 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.