#40664F
Closest named color: Dark Green Blue (#1F6357). oklch(47.5% 0.057 156.8), rgb(64, 102, 79).
Aa
White text reads best on this color (6.49:1).
About this color
#40664F is a medium-dark, muted green. In OKLCH its lightness is 47%, its chroma 0.057 and its hue 157°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.034 away. White text reads best on it, at 6.49:1.
| Hue family | Greens |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.057) |
| Temperature | in between |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.23:1 |
| White text | 6.49:1 |
Values
| HEX | #40664F |
| RGB | rgb(64, 102, 79) |
| HSL | hsl(144, 23%, 33%) |
| OKLCH | oklch(47.5% 0.057 156.8) |
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 #40664F | 6.49:1 | AA | Lc -87.2 | Fine for body text |
| Black text on #40664F | 3.23:1 | AA large text | Lc 21.9 | Dividers and decoration only |
| #40664F text on white | 6.49:1 | AA | Lc 82.2 | Fine for body text |
| #40664F text on black | 3.23:1 | AA large text | Lc -19.7 | 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
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E6EBE8
oklch(93.5% 0.007 160.1)
-
Step 200
200
#D1DCD5
oklch(88.4% 0.015 158.2)
-
Step 300
300
#B3C6B9
oklch(80.8% 0.027 155.8)
-
Step 400
400
#8BA996
oklch(70.7% 0.043 157.3)
-
Step 500
500
#6D947C
oklch(63.1% 0.056 157.3)
-
Step 600
600
#547E65
oklch(55.5% 0.061 157.6)
-
Step 700
700 (this color)
#40664F
oklch(47.5% 0.057 156.8)
-
Step 800
800
#395744
oklch(42.7% 0.048 156)
-
Step 900
900
#31483A
oklch(37.8% 0.037 157.4)
-
Step 950
950
#1D2A22
oklch(27% 0.023 157.4)
#40664F 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) | #66604E | 0.054 |
| Deuteranopia (no green cones) | #5F5C50 | 0.051 |
| Tritanopia (no blue cones) | #386560 | 0.028 |
| Achromatopsia (no color) | #5E5E5E | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40664F
#40664F
oklch(47.5% 0.057 156.8)
- #715068
#715068
oklch(47.5% 0.057 336.8)
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 #40664F, 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
- Pine #2B5D34 ΔE 0.053
- Dark Olive Green #556B2F ΔE 0.054
- Camo Green #526525 ΔE 0.054
- Dark Moss Green #606C38 ΔE 0.057
- Dark Aquamarine #017371 ΔE 0.059
- Deep Turquoise #017374 ΔE 0.062
Use #40664F 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.