#507178
Closest named color: Metallic Blue (#4F738E). oklch(52.6% 0.039 212.2), rgb(80, 113, 120).
Aa
White text reads best on this color (5.28:1).
About this color
#507178 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 53%, its chroma 0.039 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.034 away. White text reads best on it, at 5.28:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.97:1 |
| White text | 5.28:1 |
Values
| HEX | #507178 |
| RGB | rgb(80, 113, 120) |
| HSL | hsl(191, 20%, 39%) |
| OKLCH | oklch(52.6% 0.039 212.2) |
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 #507178 | 5.28:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #507178 | 3.97:1 | AA large text | Lc 27.8 | Dividers and decoration only |
| #507178 text on white | 5.28:1 | AA | Lc 76.2 | Fine for body text |
| #507178 text on black | 3.97:1 | AA large text | Lc -25.5 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D2DBDD
oklch(88.5% 0.01 212.5)
-
Step 300
300
#B4C4C7
oklch(80.9% 0.018 210.2)
-
Step 400
400
#8DA6AB
oklch(70.8% 0.029 211.1)
-
Step 500
500
#719096
oklch(63.2% 0.036 210.7)
-
Step 600
600 (this color)
#507178
oklch(52.6% 0.039 212.2)
-
Step 700
700
#48676D
oklch(49.2% 0.037 210.9)
-
Step 800
800
#3C5459
oklch(42.8% 0.03 211.9)
-
Step 900
900
#334549
oklch(37.7% 0.024 212.8)
-
Step 950
950
#1E282B
oklch(26.9% 0.015 218)
#507178 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) | #6B6F78 | 0.036 |
| Deuteranopia (no green cones) | #646978 | 0.034 |
| Tritanopia (no blue cones) | #427473 | 0.021 |
| Achromatopsia (no color) | #6C6C6C | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #507178
#507178
oklch(52.6% 0.039 212.2)
- #80635C
#80635C
oklch(52.7% 0.039 33.9)
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 #507178, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.034
- Slate #516572 ΔE 0.035
- Dim Gray #696969 ΔE 0.040
- Battleship Gray #6C757D ΔE 0.042
- Deep Aqua #08787F ΔE 0.049
- Battleship Grey #6B7C85 ΔE 0.053
- Grey Blue #647D8E ΔE 0.053
- Bluegreen #017A79 ΔE 0.054
Use #507178 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.