#6576AB
Closest named color: Stormy Blue (#507B9C). oklch(57.4% 0.085 270), rgb(101, 118, 171).
Aa
Black text reads best on this color (4.73:1).
About this color
#6576AB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.085 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.040 away. Black text reads best on it, at 4.73:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.73:1 |
| White text | 4.43:1 |
Values
| HEX | #6576AB |
| RGB | rgb(101, 118, 171) |
| HSL | hsl(225, 29%, 53%) |
| OKLCH | oklch(57.4% 0.085 270) |
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 #6576AB | 4.43:1 | AA large text | Lc -76.2 | Fine for body text |
| Black text on #6576AB | 4.73:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #6576AB text on white | 4.43:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #6576AB text on black | 4.73:1 | AA | Lc -30.9 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D3D9E8
oklch(88.5% 0.022 268.4)
-
Step 300
300
#B7C0DA
oklch(80.9% 0.038 270.4)
-
Step 400
400
#929FC7
oklch(70.6% 0.061 270.8)
-
Step 500
500
#7787B9
oklch(63% 0.078 270.4)
-
Step 600
600 (this color)
#6576AB
oklch(57.4% 0.085 270)
-
Step 700
700
#4F5E8E
oklch(49.1% 0.079 270.1)
-
Step 800
800
#414D73
oklch(42.7% 0.065 270.1)
-
Step 900
900
#37405D
oklch(37.6% 0.051 270.6)
-
Step 950
950
#202636
oklch(27% 0.031 268.4)
#6576AB 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) | #647BAD | 0.014 |
| Deuteranopia (no green cones) | #5E75AA | 0.010 |
| Tritanopia (no blue cones) | #4E8189 | 0.076 |
| Achromatopsia (no color) | #787878 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6576AB
#6576AB
oklch(57.4% 0.085 270)
- #8C7639
#8C7639
oklch(57.3% 0.085 89.7)
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 #6576AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.040
- Off Blue #5684AE ΔE 0.041
- Dull Blue #49759C ΔE 0.043
- Steel Blue #4682B4 ΔE 0.044
- Dusty Blue #5A86AD ΔE 0.045
- Cool Blue #4984B8 ΔE 0.046
- Cerulean #457B9D ΔE 0.047
- Flat Blue #3C73A8 ΔE 0.049
Use #6576AB 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.