#515E77
Closest named color: Dusty Grape (#545775). oklch(48.1% 0.044 263.3), rgb(81, 94, 119).
Aa
White text reads best on this color (6.52:1).
About this color
#515E77 is a medium-dark, muted blue. In OKLCH its lightness is 48%, its chroma 0.044 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.020 away. White text reads best on it, at 6.52:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.21:1 |
| White text | 6.52:1 |
Values
| HEX | #515E77 |
| RGB | rgb(81, 94, 119) |
| HSL | hsl(219, 19%, 39%) |
| OKLCH | oklch(48.1% 0.044 263.3) |
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 #515E77 | 6.52:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #515E77 | 3.21:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #515E77 text on white | 6.52:1 | AA | Lc 82.3 | Fine for body text |
| #515E77 text on black | 3.21:1 | AA large text | Lc -19.6 | 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 700.
-
Step 50
50
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D5D9E1
oklch(88.5% 0.012 264.5)
-
Step 300
300
#BAC1CF
oklch(81% 0.021 264.4)
-
Step 400
400
#96A1B6
oklch(70.7% 0.033 263.4)
-
Step 500
500
#7C8AA4
oklch(63.1% 0.043 262.8)
-
Step 600
600
#65748F
oklch(55.7% 0.046 262.1)
-
Step 700
700 (this color)
#515E77
oklch(48.1% 0.044 263.3)
-
Step 800
800
#454F63
oklch(42.7% 0.036 264.1)
-
Step 900
900
#3A4251
oklch(37.8% 0.028 263)
-
Step 950
950
#22272F
oklch(27.1% 0.017 259.8)
#515E77 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) | #566078 | 0.010 |
| Deuteranopia (no green cones) | #525C76 | 0.006 |
| Tritanopia (no blue cones) | #466366 | 0.039 |
| Achromatopsia (no color) | #5E5E5E | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515E77
#515E77
oklch(48.1% 0.044 263.3)
- #6A5C41
#6A5C41
oklch(48.1% 0.044 83.5)
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 #515E77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.020
- Slate #516572 ΔE 0.025
- YInMn Blue #415A77 ΔE 0.026
- Dusk #4E5481 ΔE 0.039
- Denim #3B638C ΔE 0.040
- Dusky Blue #475F94 ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.053
- Denim Blue #3B5B92 ΔE 0.054
Use #515E77 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.