#3F6151
Closest named color: Dark Green Blue (#1F6357). oklch(46.1% 0.048 163.5), rgb(63, 97, 81).
Aa
White text reads best on this color (6.90:1).
About this color
#3F6151 is a medium-dark, muted green. In OKLCH its lightness is 46%, its chroma 0.048 and its hue 163°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.028 away. White text reads best on it, at 6.90:1.
| Hue family | Greens |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.048) |
| Temperature | in between |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.04:1 |
| White text | 6.90:1 |
Values
| HEX | #3F6151 |
| RGB | rgb(63, 97, 81) |
| HSL | hsl(152, 21%, 31%) |
| OKLCH | oklch(46.1% 0.048 163.5) |
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 #3F6151 | 6.90:1 | AA | Lc -88.8 | Fine for body text |
| Black text on #3F6151 | 3.04:1 | AA large text | Lc 20.2 | Dividers and decoration only |
| #3F6151 text on white | 6.90:1 | AA | Lc 83.8 | Fine for body text |
| #3F6151 text on black | 3.04:1 | AA large text | Lc -18.1 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBE8
oklch(93.5% 0.007 160.1)
-
Step 200
200
#D2DCD7
oklch(88.5% 0.013 164.8)
-
Step 300
300
#B4C6BC
oklch(81% 0.024 161.6)
-
Step 400
400
#8CA89A
oklch(70.6% 0.037 163.7)
-
Step 500
500
#709382
oklch(63.2% 0.047 163.7)
-
Step 600
600
#577D6B
oklch(55.6% 0.051 163.7)
-
Step 700
700 (this color)
#3F6151
oklch(46.1% 0.048 163.5)
-
Step 800
800
#3B5649
oklch(42.7% 0.039 163.4)
-
Step 900
900
#33473D
oklch(37.8% 0.03 162.8)
-
Step 950
950
#1E2A24
oklch(27.2% 0.02 163)
#3F6151 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) | #605C50 | 0.047 |
| Deuteranopia (no green cones) | #5A5852 | 0.045 |
| Tritanopia (no blue cones) | #37615C | 0.019 |
| Achromatopsia (no color) | #5A5A5A | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F6151
#3F6151
oklch(46.1% 0.048 163.5)
- #6C4E5F
#6C4E5F
oklch(46.2% 0.047 344.1)
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 #3F6151, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.028
- Dark Aqua #05696B ΔE 0.049
- Pine #2B5D34 ΔE 0.051
- Petrol #005F6A ΔE 0.057
- Slate #516572 ΔE 0.060
- Spruce #0A5F38 ΔE 0.061
- Dark Slate Gray #2F4F4F ΔE 0.064
- Dark Aquamarine #017371 ΔE 0.065
Use #3F6151 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.