#507F84
Closest named color: Grey Blue (#647D8E). oklch(56.5% 0.052 204.4), rgb(80, 127, 132).
Aa
Black text reads best on this color (4.71:1).
About this color
#507F84 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 56%, its chroma 0.052 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.031 away. Black text reads best on it, at 4.71:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.71:1 |
| White text | 4.45:1 |
Values
| HEX | #507F84 |
| RGB | rgb(80, 127, 132) |
| HSL | hsl(186, 25%, 42%) |
| OKLCH | oklch(56.5% 0.052 204.4) |
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 #507F84 | 4.45:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #507F84 | 4.71:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #507F84 text on white | 4.45:1 | AA large text | Lc 70.9 | Content text, not long reading |
| #507F84 text on black | 4.71:1 | AA | Lc -30.8 | Non-text elements, placeholder text |
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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D0DCDD
oklch(88.6% 0.013 202.9)
-
Step 300
300
#B0C5C8
oklch(80.8% 0.023 207.1)
-
Step 400
400
#86A8AB
oklch(70.7% 0.037 203)
-
Step 500
500
#679297
oklch(63% 0.047 205.1)
-
Step 600
600 (this color)
#507F84
oklch(56.5% 0.052 204.4)
-
Step 700
700
#3E696D
oklch(49.1% 0.048 203.3)
-
Step 800
800
#345659
oklch(42.8% 0.04 202.9)
-
Step 900
900
#2D4749
oklch(37.8% 0.032 202)
-
Step 950
950
#1B292B
oklch(26.9% 0.019 207.1)
#507F84 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) | #787B84 | 0.051 |
| Deuteranopia (no green cones) | #6F7484 | 0.048 |
| Tritanopia (no blue cones) | #3B8380 | 0.024 |
| Achromatopsia (no color) | #777777 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #507F84
#507F84
oklch(56.5% 0.052 204.4)
- #926A67
#926A67
oklch(56.4% 0.052 23.7)
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 #507F84, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.031
- Battleship Grey #6B7C85 ΔE 0.034
- Battleship Gray #6C757D ΔE 0.041
- Steel Grey #6F828A ΔE 0.042
- Stormy Blue #507B9C ΔE 0.043
- Metallic Blue #4F738E ΔE 0.044
- Cerulean #457B9D ΔE 0.046
- Slate Gray #708090 ΔE 0.046
Use #507F84 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.