#647D87
Closest named color: Battleship Grey (#6B7C85). oklch(57.4% 0.033 224.2), rgb(100, 125, 135).
Aa
Black text reads best on this color (4.82:1).
About this color
#647D87 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 57%, its chroma 0.033 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Battleship Grey (#6B7C85), ΔE 0.009 away. Black text reads best on it, at 4.82:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Battleship Grey (#6B7C85) |
| Black text | 4.82:1 |
| White text | 4.35:1 |
Values
| HEX | #647D87 |
| RGB | rgb(100, 125, 135) |
| HSL | hsl(197, 15%, 46%) |
| OKLCH | oklch(57.4% 0.033 224.2) |
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 #647D87 | 4.35:1 | AA large text | Lc -75.6 | Fine for body text |
| Black text on #647D87 | 4.82:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #647D87 text on white | 4.35:1 | AA large text | Lc 70.1 | Content text, not long reading |
| #647D87 text on black | 4.82:1 | AA | Lc -31.5 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D4DADD
oklch(88.5% 0.008 228.9)
-
Step 300
300
#B7C3C8
oklch(80.9% 0.015 224.5)
-
Step 400
400
#92A4AC
oklch(70.7% 0.023 226.3)
-
Step 500
500
#768E97
oklch(63.1% 0.031 222.6)
-
Step 600
600 (this color)
#647D87
oklch(57.4% 0.033 224.2)
-
Step 700
700
#4E656E
oklch(49.2% 0.031 223.8)
-
Step 800
800
#405259
oklch(42.6% 0.025 223.6)
-
Step 900
900
#374449
oklch(37.7% 0.019 223.2)
-
Step 950
950
#20282B
oklch(27% 0.013 222.5)
#647D87 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) | #777C88 | 0.026 |
| Deuteranopia (no green cones) | #727787 | 0.025 |
| Tritanopia (no blue cones) | #598080 | 0.021 |
| Achromatopsia (no color) | #797979 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #647D87
#647D87
oklch(57.4% 0.033 224.2)
- #8A7369
#8A7369
oklch(57.4% 0.033 44.8)
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 #647D87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Grey #6B7C85 ΔE 0.009
- Grey Blue #647D8E ΔE 0.011
- Steel Grey #6F828A ΔE 0.022
- Slate Gray #708090 ΔE 0.023
- Battleship Gray #6C757D ΔE 0.024
- Steel #738595 ΔE 0.036
- Medium Grey #7D7F7C ΔE 0.039
- Stormy Blue #507B9C ΔE 0.041
Use #647D87 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.