#3F6458
Closest named color: Dark Green Blue (#1F6357). oklch(47.1% 0.047 171.8), rgb(63, 100, 88).
Aa
White text reads best on this color (6.61:1).
About this color
#3F6458 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 47%, its chroma 0.047 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.030 away. White text reads best on it, at 6.61:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.17:1 |
| White text | 6.61:1 |
Values
| HEX | #3F6458 |
| RGB | rgb(63, 100, 88) |
| HSL | hsl(161, 23%, 32%) |
| OKLCH | oklch(47.1% 0.047 171.8) |
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 #3F6458 | 6.61:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #3F6458 | 3.17:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #3F6458 text on white | 6.61:1 | AA | Lc 82.6 | Fine for body text |
| #3F6458 text on black | 3.17:1 | AA large text | Lc -19.3 | 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
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D1DCD8
oklch(88.5% 0.013 172.3)
-
Step 300
300
#B3C6BF
oklch(81% 0.023 171.6)
-
Step 400
400
#8BA89E
oklch(70.7% 0.035 172.3)
-
Step 500
500
#6D9386
oklch(63.1% 0.046 171.7)
-
Step 600
600
#547D70
oklch(55.5% 0.05 172.6)
-
Step 700
700 (this color)
#3F6458
oklch(47.1% 0.047 171.8)
-
Step 800
800
#39564C
oklch(42.7% 0.039 170.9)
-
Step 900
900
#314740
oklch(37.7% 0.03 172.9)
-
Step 950
950
#1D2A25
oklch(27.1% 0.02 169.2)
#3F6458 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) | #625F57 | 0.049 |
| Deuteranopia (no green cones) | #5B5B59 | 0.046 |
| Tritanopia (no blue cones) | #356560 | 0.015 |
| Achromatopsia (no color) | #5D5D5D | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F6458
#3F6458
oklch(47.1% 0.047 171.8)
- #70505E
#70505E
oklch(47% 0.047 351.1)
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 #3F6458, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.030
- Dark Aqua #05696B ΔE 0.042
- Slate #516572 ΔE 0.050
- Dark Aquamarine #017371 ΔE 0.055
- Petrol #005F6A ΔE 0.055
- Deep Turquoise #017374 ΔE 0.057
- Pine #2B5D34 ΔE 0.062
- Dim Gray #696969 ΔE 0.068
Use #3F6458 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.