#3F7D8A
Closest named color: Ocean (#017B92). oklch(55.4% 0.067 213), rgb(63, 125, 138).
Aa
White text reads best on this color (4.65:1).
About this color
#3F7D8A is a medium-dark, muted teal or cyan. In OKLCH its lightness is 55%, its chroma 0.067 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.034 away. White text reads best on it, at 4.65:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.51:1 |
| White text | 4.65:1 |
Values
| HEX | #3F7D8A |
| RGB | rgb(63, 125, 138) |
| HSL | hsl(190, 37%, 39%) |
| OKLCH | oklch(55.4% 0.067 213) |
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 #3F7D8A | 4.65:1 | AA | Lc -77.6 | Fine for body text |
| Black text on #3F7D8A | 4.51:1 | AA | Lc 31.9 | Non-text elements, placeholder text |
| #3F7D8A text on white | 4.65:1 | AA | Lc 72.2 | Content text, not long reading |
| #3F7D8A text on black | 4.51:1 | AA | Lc -29.5 | 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 600.
-
Step 50
50
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CDDCE0
oklch(88.4% 0.017 215.5)
-
Step 300
300
#ABC6CC
oklch(80.8% 0.03 212.6)
-
Step 400
400
#7EA9B3
oklch(70.7% 0.048 213.6)
-
Step 500
500
#5C94A0
oklch(63.2% 0.062 212.8)
-
Step 600
600 (this color)
#3F7D8A
oklch(55.4% 0.067 213)
-
Step 700
700
#316A76
oklch(49.1% 0.062 213.3)
-
Step 800
800
#2A5660
oklch(42.6% 0.051 214.4)
-
Step 900
900
#27474E
oklch(37.6% 0.04 213.3)
-
Step 950
950
#172A2E
oklch(27.1% 0.026 212.5)
#3F7D8A 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) | #73798B | 0.062 |
| Deuteranopia (no green cones) | #67718A | 0.055 |
| Tritanopia (no blue cones) | #048281 | 0.038 |
| Achromatopsia (no color) | #747474 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F7D8A
#3F7D8A
oklch(55.4% 0.067 213)
- #966459
#966459
oklch(55.4% 0.068 32.9)
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 #3F7D8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.034
- Cerulean #457B9D ΔE 0.034
- Metallic Blue #4F738E ΔE 0.035
- Stormy Blue #507B9C ΔE 0.037
- Teal #008080 ΔE 0.037
- Deep Aqua #08787F ΔE 0.040
- Grey Blue #647D8E ΔE 0.042
- Teal Blue #01889F ΔE 0.042
Use #3F7D8A 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.