#64819F
Closest named color: Dusty Blue (#5A86AD). oklch(59.2% 0.057 249.7), rgb(100, 129, 159).
Aa
Black text reads best on this color (5.18:1).
About this color
#64819F is a medium-dark, muted blue. In OKLCH its lightness is 59%, its chroma 0.057 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.023 away. Black text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.18:1 |
| White text | 4.05:1 |
Values
| HEX | #64819F |
| RGB | rgb(100, 129, 159) |
| HSL | hsl(211, 24%, 51%) |
| OKLCH | oklch(59.2% 0.057 249.7) |
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 #64819F | 4.05:1 | AA large text | Lc -73.2 | Content text, not long reading |
| Black text on #64819F | 5.18:1 | AA | Lc 36.4 | Non-text elements, placeholder text |
| #64819F text on white | 4.05:1 | AA large text | Lc 67.7 | Content text, not long reading |
| #64819F text on black | 5.18:1 | AA | Lc -33.9 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE2
oklch(88.5% 0.014 248)
-
Step 300
300
#B5C2D1
oklch(80.9% 0.026 251.9)
-
Step 400
400
#8EA3BA
oklch(70.7% 0.041 250.8)
-
Step 500
500
#718CA8
oklch(63% 0.052 249.6)
-
Step 600
600 (this color)
#64819F
oklch(59.2% 0.057 249.7)
-
Step 700
700
#49637E
oklch(49% 0.054 249.9)
-
Step 800
800
#3C5166
oklch(42.6% 0.044 248.9)
-
Step 900
900
#344353
oklch(37.7% 0.034 250.4)
-
Step 950
950
#1E2731
oklch(26.9% 0.023 251.3)
#64819F 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) | #7582A0 | 0.023 |
| Deuteranopia (no green cones) | #6E7B9E | 0.020 |
| Tritanopia (no blue cones) | #50888B | 0.049 |
| Achromatopsia (no color) | #7E7E7E | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64819F
#64819F
oklch(59.2% 0.057 249.7)
- #947859
#947859
oklch(59.2% 0.056 69.2)
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 #64819F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.023
- Off Blue #5684AE ΔE 0.026
- Grey Blue #647D8E ΔE 0.026
- Slate Gray #708090 ΔE 0.026
- Steel #738595 ΔE 0.029
- Stormy Blue #507B9C ΔE 0.031
- Lavender Gray #7E7F9A ΔE 0.035
- Steel Grey #6F828A ΔE 0.036
Use #64819F 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.