#3F7182
Closest named color: Metallic Blue (#4F738E). oklch(52% 0.06 222.1), rgb(63, 113, 130).
Aa
White text reads best on this color (5.39:1).
About this color
#3F7182 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.060 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.028 away. White text reads best on it, at 5.39:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.89:1 |
| White text | 5.39:1 |
Values
| HEX | #3F7182 |
| RGB | rgb(63, 113, 130) |
| HSL | hsl(195, 35%, 38%) |
| OKLCH | oklch(52% 0.06 222.1) |
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 #3F7182 | 5.39:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #3F7182 | 3.89:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #3F7182 text on white | 5.39:1 | AA | Lc 76.7 | Fine for body text |
| #3F7182 text on black | 3.89:1 | AA large text | Lc -25.0 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CEDCE1
oklch(88.5% 0.017 221.1)
-
Step 300
300
#ADC5CE
oklch(80.8% 0.029 222.4)
-
Step 400
400
#81A8B6
oklch(70.8% 0.047 221.9)
-
Step 500
500
#6092A3
oklch(63.1% 0.059 221.4)
-
Step 600
600
#457C8F
oklch(55.6% 0.065 222.5)
-
Step 700
700 (this color)
#3F7182
oklch(52% 0.06 222.1)
-
Step 800
800
#2E5563
oklch(42.7% 0.05 223.4)
-
Step 900
900
#294650
oklch(37.6% 0.039 222)
-
Step 950
950
#19292F
oklch(26.9% 0.024 223.4)
#3F7182 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) | #676F83 | 0.049 |
| Deuteranopia (no green cones) | #5D6782 | 0.044 |
| Tritanopia (no blue cones) | #197676 | 0.039 |
| Achromatopsia (no color) | #6A6A6A | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F7182
#3F7182
oklch(52% 0.06 222.1)
- #875E4E
#875E4E
oklch(52.1% 0.059 42.2)
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 #3F7182, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.028
- Deep Aqua #08787F ΔE 0.037
- Slate #516572 ΔE 0.039
- Sea Blue #047495 ΔE 0.040
- Ocean #017B92 ΔE 0.040
- Dull Blue #49759C ΔE 0.043
- Deep Turquoise #017374 ΔE 0.045
- Bluegreen #017A79 ΔE 0.047
Use #3F7182 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.