#648491
Closest named color: Steel Grey (#6F828A). oklch(59.4% 0.041 224.8), rgb(100, 132, 145).
Aa
Black text reads best on this color (5.25:1).
About this color
#648491 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 59%, its chroma 0.041 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Grey (#6F828A), ΔE 0.016 away. Black text reads best on it, at 5.25:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.25:1 |
| White text | 3.99:1 |
Values
| HEX | #648491 |
| RGB | rgb(100, 132, 145) |
| HSL | hsl(197, 18%, 48%) |
| OKLCH | oklch(59.4% 0.041 224.8) |
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 #648491 | 3.99:1 | AA large text | Lc -72.8 | Content text, not long reading |
| Black text on #648491 | 5.25:1 | AA | Lc 36.8 | Non-text elements, placeholder text |
| #648491 text on white | 3.99:1 | AA large text | Lc 67.3 | Content text, not long reading |
| #648491 text on black | 5.25:1 | AA | Lc -34.4 | 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 500.
-
Step 50
50
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D2DBDF
oklch(88.6% 0.011 226)
-
Step 300
300
#B3C4CA
oklch(80.9% 0.02 220.9)
-
Step 400
400
#8CA5B0
oklch(70.6% 0.032 226.2)
-
Step 500
500 (this color)
#648491
oklch(59.4% 0.041 224.8)
-
Step 600
600
#577987
oklch(55.5% 0.044 225.4)
-
Step 700
700
#476673
oklch(49.1% 0.042 225.9)
-
Step 800
800
#3A535D
oklch(42.6% 0.035 224.7)
-
Step 900
900
#32454C
oklch(37.7% 0.027 222.6)
-
Step 950
950
#1E282D
oklch(27% 0.017 229.8)
#648491 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) | #7D8292 | 0.034 |
| Deuteranopia (no green cones) | #767D91 | 0.030 |
| Tritanopia (no blue cones) | #558888 | 0.027 |
| Achromatopsia (no color) | #7F7F7F | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #648491
#648491
oklch(59.4% 0.041 224.8)
- #94776A
#94776A
oklch(59.3% 0.041 45.4)
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 #648491, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.016
- Slate Gray #708090 ΔE 0.018
- Grey Blue #647D8E ΔE 0.020
- Steel #738595 ΔE 0.021
- Battleship Grey #6B7C85 ΔE 0.025
- Light Slate Gray #778899 ΔE 0.031
- Medium Grey #7D7F7C ΔE 0.042
- Gray #808080 ΔE 0.042
Use #648491 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.