#64709E
Closest named color: Dull Blue (#49759C). oklch(55.4% 0.073 272.6), rgb(100, 112, 158).
Aa
White text reads best on this color (4.82:1).
About this color
#64709E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.073 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.035 away. White text reads best on it, at 4.82:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.35:1 |
| White text | 4.82:1 |
Values
| HEX | #64709E |
| RGB | rgb(100, 112, 158) |
| HSL | hsl(228, 23%, 51%) |
| OKLCH | oklch(55.4% 0.073 272.6) |
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 #64709E | 4.82:1 | AA | Lc -78.9 | Fine for body text |
| Black text on #64709E | 4.35:1 | AA large text | Lc 30.6 | Non-text elements, placeholder text |
| #64709E text on white | 4.82:1 | AA | Lc 73.4 | Content text, not long reading |
| #64709E text on black | 4.35:1 | AA large text | Lc -28.3 | Dividers and decoration only |
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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D5D9E6
oklch(88.6% 0.018 272.3)
-
Step 300
300
#B9C0D7
oklch(81% 0.033 272.2)
-
Step 400
400
#959FC2
oklch(70.7% 0.052 272.5)
-
Step 500
500
#7B87B3
oklch(63% 0.068 272.5)
-
Step 600
600 (this color)
#64709E
oklch(55.4% 0.073 272.6)
-
Step 700
700
#535E88
oklch(49% 0.069 272.4)
-
Step 800
800
#444D6E
oklch(42.7% 0.056 272.1)
-
Step 900
900
#394059
oklch(37.6% 0.044 272.1)
-
Step 950
950
#222634
oklch(27.1% 0.027 272.1)
#64709E 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) | #6174A0 | 0.011 |
| Deuteranopia (no green cones) | #5D709D | 0.010 |
| Tritanopia (no blue cones) | #537980 | 0.066 |
| Achromatopsia (no color) | #727272 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64709E
#64709E
oklch(55.4% 0.073 272.6)
- #82723E
#82723E
oklch(55.5% 0.074 92.7)
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 #64709E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.035
- Stormy Blue #507B9C ΔE 0.039
- Metallic Blue #4F738E ΔE 0.041
- Cerulean #457B9D ΔE 0.046
- Flat Blue #3C73A8 ΔE 0.046
- Muted Blue #3B719F ΔE 0.047
- Grey Purple #826D8C ΔE 0.051
- French Blue #436BAD ΔE 0.051
Use #64709E 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.