#3F7583
Closest named color: Metallic Blue (#4F738E). oklch(53.1% 0.061 216.6), rgb(63, 117, 131).
Aa
White text reads best on this color (5.14:1).
About this color
#3F7583 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 53%, its chroma 0.061 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.027 away. White text reads best on it, at 5.14:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.08:1 |
| White text | 5.14:1 |
Values
| HEX | #3F7583 |
| RGB | rgb(63, 117, 131) |
| HSL | hsl(192, 35%, 38%) |
| OKLCH | oklch(53.1% 0.061 216.6) |
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 #3F7583 | 5.14:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #3F7583 | 4.08:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #3F7583 text on white | 5.14:1 | AA | Lc 75.3 | Fine for body text |
| #3F7583 text on black | 4.08:1 | AA large text | Lc -26.4 | 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
#CEDCE0
oklch(88.5% 0.016 216.7)
-
Step 300
300
#AEC5CC
oklch(80.8% 0.027 218)
-
Step 400
400
#82A8B2
oklch(70.7% 0.044 215.6)
-
Step 500
500
#6192A0
oklch(63% 0.057 217.7)
-
Step 600
600 (this color)
#3F7583
oklch(53.1% 0.061 216.6)
-
Step 700
700
#386976
oklch(49.2% 0.057 217)
-
Step 800
800
#2F5660
oklch(42.9% 0.047 216.2)
-
Step 900
900
#2A474E
oklch(37.8% 0.037 214.7)
-
Step 950
950
#19292E
oklch(26.9% 0.023 219.4)
#3F7583 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) | #6B7284 | 0.054 |
| Deuteranopia (no green cones) | #616A83 | 0.049 |
| Tritanopia (no blue cones) | #167A79 | 0.037 |
| Achromatopsia (no color) | #6D6D6D | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F7583
#3F7583
oklch(53.1% 0.061 216.6)
- #8C6053
#8C6053
oklch(53.2% 0.061 37.2)
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 #3F7583, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.027
- Deep Aqua #08787F ΔE 0.033
- Ocean #017B92 ΔE 0.035
- Bluegreen #017A79 ΔE 0.041
- Sea Blue #047495 ΔE 0.041
- Cerulean #457B9D ΔE 0.042
- Dull Blue #49759C ΔE 0.043
- Teal #008080 ΔE 0.044
Use #3F7583 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.