#6581BA
Closest named color: Off Blue (#5684AE). oklch(60.5% 0.093 263.8), rgb(101, 129, 186).
Aa
Black text reads best on this color (5.40:1).
About this color
#6581BA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.093 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.029 away. Black text reads best on it, at 5.40:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.40:1 |
| White text | 3.88:1 |
Values
| HEX | #6581BA |
| RGB | rgb(101, 129, 186) |
| HSL | hsl(220, 38%, 56%) |
| OKLCH | oklch(60.5% 0.093 263.8) |
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 #6581BA | 3.88:1 | AA large text | Lc -71.7 | Content text, not long reading |
| Black text on #6581BA | 5.40:1 | AA | Lc 37.8 | Non-text elements, placeholder text |
| #6581BA text on white | 3.88:1 | AA large text | Lc 66.2 | Content text, not long reading |
| #6581BA text on black | 5.40:1 | AA | Lc -35.4 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D1D9EA
oklch(88.4% 0.025 265.6)
-
Step 300
300
#B2C1DF
oklch(80.9% 0.046 264.3)
-
Step 400
400
#89A1CF
oklch(70.8% 0.073 263.2)
-
Step 500
500 (this color)
#6581BA
oklch(60.5% 0.093 263.8)
-
Step 600
600
#5472AF
oklch(55.6% 0.102 263.5)
-
Step 700
700
#455F96
oklch(49.1% 0.094 264.1)
-
Step 800
800
#394E7A
oklch(42.8% 0.078 264)
-
Step 900
900
#314162
oklch(37.7% 0.061 264)
-
Step 950
950
#1D2639
oklch(27% 0.038 264.5)
#6581BA 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) | #6C85BC | 0.015 |
| Deuteranopia (no green cones) | #637EB9 | 0.009 |
| Tritanopia (no blue cones) | #458D95 | 0.084 |
| Achromatopsia (no color) | #818181 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6581BA
#6581BA
oklch(60.5% 0.093 263.8)
- #9C7D3A
#9C7D3A
oklch(60.6% 0.094 84.4)
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 #6581BA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.029
- Dusty Blue #5A86AD ΔE 0.031
- Faded Blue #658CBB ΔE 0.031
- Cool Blue #4984B8 ΔE 0.031
- Steel Blue #4682B4 ΔE 0.035
- Silver Lake Blue #778DA9 ΔE 0.055
- Stormy Blue #507B9C ΔE 0.055
- Lavender Gray #7E7F9A ΔE 0.056
Use #6581BA 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.