#66849C
Closest named color: Steel (#738595). oklch(59.9% 0.05 242.8), rgb(102, 132, 156).
Aa
Black text reads best on this color (5.34:1).
About this color
#66849C is a medium-dark, muted blue. In OKLCH its lightness is 60%, its chroma 0.050 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Steel (#738595), ΔE 0.020 away. Black text reads best on it, at 5.34:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Steel (#738595) |
| Black text | 5.34:1 |
| White text | 3.92:1 |
Values
| HEX | #66849C |
| RGB | rgb(102, 132, 156) |
| HSL | hsl(207, 21%, 51%) |
| OKLCH | oklch(59.9% 0.05 242.8) |
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 #66849C | 3.92:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #66849C | 5.34:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #66849C text on white | 3.92:1 | AA large text | Lc 66.7 | Content text, not long reading |
| #66849C text on black | 5.34:1 | AA | Lc -35.0 | 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
#E6EAEE
oklch(93.5% 0.007 247.9)
-
Step 200
200
#D2DAE2
oklch(88.5% 0.014 248)
-
Step 300
300
#B4C3D0
oklch(81% 0.025 244.2)
-
Step 400
400
#8CA4B8
oklch(70.7% 0.04 243.5)
-
Step 500
500 (this color)
#66849C
oklch(59.9% 0.05 242.8)
-
Step 600
600
#577791
oklch(55.5% 0.055 243.5)
-
Step 700
700
#47647C
oklch(49% 0.052 244.1)
-
Step 800
800
#3B5264
oklch(42.7% 0.041 242.4)
-
Step 900
900
#324452
oklch(37.7% 0.033 242.1)
-
Step 950
950
#1E2830
oklch(27.1% 0.02 242.7)
#66849C 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) | #7A849D | 0.027 |
| Deuteranopia (no green cones) | #737E9C | 0.023 |
| Tritanopia (no blue cones) | #548A8C | 0.041 |
| Achromatopsia (no color) | #808080 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66849C
#66849C
oklch(59.9% 0.05 242.8)
- #967A61
#967A61
oklch(60% 0.05 63.4)
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 #66849C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel #738595 ΔE 0.020
- Slate Gray #708090 ΔE 0.021
- Grey Blue #647D8E ΔE 0.026
- Light Slate Gray #778899 ΔE 0.027
- Dusty Blue #5A86AD ΔE 0.027
- Steel Grey #6F828A ΔE 0.028
- Off Blue #5684AE ΔE 0.032
- Lavender Gray #7E7F9A ΔE 0.033
Use #66849C 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.