#63709A
Closest named color: Dull Blue (#49759C). oklch(55.1% 0.068 270.8), rgb(99, 112, 154).
Aa
White text reads best on this color (4.86:1).
About this color
#63709A is a medium-dark, muted blue. In OKLCH its lightness is 55%, its chroma 0.068 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.033 away. White text reads best on it, at 4.86:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.31:1 |
| White text | 4.86:1 |
Values
| HEX | #63709A |
| RGB | rgb(99, 112, 154) |
| HSL | hsl(226, 22%, 50%) |
| OKLCH | oklch(55.1% 0.068 270.8) |
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 #63709A | 4.86:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #63709A | 4.31:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #63709A text on white | 4.86:1 | AA | Lc 73.7 | Content text, not long reading |
| #63709A text on black | 4.31:1 | AA large text | Lc -28.0 | 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
#D5D9E5
oklch(88.6% 0.017 271.2)
-
Step 300
300
#B9C0D5
oklch(80.9% 0.031 271)
-
Step 400
400
#95A0C0
oklch(70.8% 0.048 270.2)
-
Step 500
500
#7B88B0
oklch(63.1% 0.062 270.6)
-
Step 600
600 (this color)
#63709A
oklch(55.1% 0.068 270.8)
-
Step 700
700
#535F85
oklch(49.1% 0.063 270.5)
-
Step 800
800
#444E6C
oklch(42.8% 0.052 269.9)
-
Step 900
900
#394157
oklch(37.7% 0.039 269)
-
Step 950
950
#222633
oklch(27.1% 0.025 271.4)
#63709A 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) | #62749C | 0.011 |
| Deuteranopia (no green cones) | #5E6F99 | 0.008 |
| Tritanopia (no blue cones) | #53787F | 0.059 |
| Achromatopsia (no color) | #717171 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63709A
#63709A
oklch(55.1% 0.068 270.8)
- #817142
#817142
oklch(55.2% 0.068 91.2)
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 #63709A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.033
- Metallic Blue #4F738E ΔE 0.035
- Stormy Blue #507B9C ΔE 0.036
- Cerulean #457B9D ΔE 0.043
- Muted Blue #3B719F ΔE 0.046
- Flat Blue #3C73A8 ΔE 0.047
- Grey Blue #647D8E ΔE 0.048
- Grey Purple #826D8C ΔE 0.049
Use #63709A 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.